Home / 86,272.74-129,430.59-68,570.19

Finding the Fourth Proportional to 86,272.74, 129,430.59 and 68,570.19

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Solution

The fourth proportional to 86,272.74, 129,430.59 and 68,570.19 is: 102,872.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,272.74 : 129,430.59 = 68,570.19 : x
  2. Step 2: Convert to fraction form
    86,272.74/129,430.59 = 68,570.19/x
  3. Step 3: Cross multiply
    86,272.74x = 129,430.59 × 68,570.19
  4. Step 4: Simplify right side
    86,272.74x = 8,875,080,148.11
  5. Step 5: Solve for x
    x = 8,875,080,148.11/86,272.74
  6. Step 6: Final answer
    x = 102,872.36

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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.