Home / 153,601,421.69-211,990,699.51-86,634,126.07

Finding the Fourth Proportional to 153,601,421.69, 211,990,699.51 and 86,634,126.07

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Solution

The fourth proportional to 153,601,421.69, 211,990,699.51 and 86,634,126.07 is: 119,566,790.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,601,421.69 : 211,990,699.51 = 86,634,126.07 : x
  2. Step 2: Convert to fraction form
    153,601,421.69/211,990,699.51 = 86,634,126.07/x
  3. Step 3: Cross multiply
    153,601,421.69x = 211,990,699.51 × 86,634,126.07
  4. Step 4: Simplify right side
    153,601,421.69x = 18,365,628,986,270,264
  5. Step 5: Solve for x
    x = 18,365,628,986,270,264/153,601,421.69
  6. Step 6: Final answer
    x = 119,566,790.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.