Home / 113,123.97-156,001.21-76,410.92

Finding the Fourth Proportional to 113,123.97, 156,001.21 and 76,410.92

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Solution

The fourth proportional to 113,123.97, 156,001.21 and 76,410.92 is: 105,372.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,123.97 : 156,001.21 = 76,410.92 : x
  2. Step 2: Convert to fraction form
    113,123.97/156,001.21 = 76,410.92/x
  3. Step 3: Cross multiply
    113,123.97x = 156,001.21 × 76,410.92
  4. Step 4: Simplify right side
    113,123.97x = 11,920,196,176.19
  5. Step 5: Solve for x
    x = 11,920,196,176.19/113,123.97
  6. Step 6: Final answer
    x = 105,372.86

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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.