Home / 86,488,514,783.51-129,685,478,685.88-68,675,319,848.22

Finding the Fourth Proportional to 86,488,514,783.51, 129,685,478,685.88 and 68,675,319,848.22

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Solution

The fourth proportional to 86,488,514,783.51, 129,685,478,685.88 and 68,675,319,848.22 is: 102,975,426,861.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,488,514,783.51 : 129,685,478,685.88 = 68,675,319,848.22 : x
  2. Step 2: Convert to fraction form
    86,488,514,783.51/129,685,478,685.88 = 68,675,319,848.22/x
  3. Step 3: Cross multiply
    86,488,514,783.51x = 129,685,478,685.88 × 68,675,319,848.22
  4. Step 4: Simplify right side
    86,488,514,783.51x = 8,906,191,728,421,938,135,040
  5. Step 5: Solve for x
    x = 8,906,191,728,421,938,135,040/86,488,514,783.51
  6. Step 6: Final answer
    x = 102,975,426,861.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.