Home / 113,712.08-156,920.76-62,729.78

Finding the Fourth Proportional to 113,712.08, 156,920.76 and 62,729.78

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Solution

The fourth proportional to 113,712.08, 156,920.76 and 62,729.78 is: 86,566.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,712.08 : 156,920.76 = 62,729.78 : x
  2. Step 2: Convert to fraction form
    113,712.08/156,920.76 = 62,729.78/x
  3. Step 3: Cross multiply
    113,712.08x = 156,920.76 × 62,729.78
  4. Step 4: Simplify right side
    113,712.08x = 9,843,604,752.23
  5. Step 5: Solve for x
    x = 9,843,604,752.23/113,712.08
  6. Step 6: Final answer
    x = 86,566.04

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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.