Home / 86,363.52-129,316.86-67,681.68

Finding the Fourth Proportional to 86,363.52, 129,316.86 and 67,681.68

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Solution

The fourth proportional to 86,363.52, 129,316.86 and 67,681.68 is: 101,343.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,363.52 : 129,316.86 = 67,681.68 : x
  2. Step 2: Convert to fraction form
    86,363.52/129,316.86 = 67,681.68/x
  3. Step 3: Cross multiply
    86,363.52x = 129,316.86 × 67,681.68
  4. Step 4: Simplify right side
    86,363.52x = 8,752,382,337.12
  5. Step 5: Solve for x
    x = 8,752,382,337.12/86,363.52
  6. Step 6: Final answer
    x = 101,343.51

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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.