Home / 86,382.32-119,137.12-72,531.18

Finding the Fourth Proportional to 86,382.32, 119,137.12 and 72,531.18

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Solution

The fourth proportional to 86,382.32, 119,137.12 and 72,531.18 is: 100,033.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,382.32 : 119,137.12 = 72,531.18 : x
  2. Step 2: Convert to fraction form
    86,382.32/119,137.12 = 72,531.18/x
  3. Step 3: Cross multiply
    86,382.32x = 119,137.12 × 72,531.18
  4. Step 4: Simplify right side
    86,382.32x = 8,641,155,895.40
  5. Step 5: Solve for x
    x = 8,641,155,895.40/86,382.32
  6. Step 6: Final answer
    x = 100,033.85

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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.