Home / 112,425.91-155,129.33-66,479.18

Finding the Fourth Proportional to 112,425.91, 155,129.33 and 66,479.18

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Solution

The fourth proportional to 112,425.91, 155,129.33 and 66,479.18 is: 91,730.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,425.91 : 155,129.33 = 66,479.18 : x
  2. Step 2: Convert to fraction form
    112,425.91/155,129.33 = 66,479.18/x
  3. Step 3: Cross multiply
    112,425.91x = 155,129.33 × 66,479.18
  4. Step 4: Simplify right side
    112,425.91x = 10,312,870,042.90
  5. Step 5: Solve for x
    x = 10,312,870,042.90/112,425.91
  6. Step 6: Final answer
    x = 91,730.37

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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.