Home / 113,242.08-156,306.72-90,738.12

Finding the Fourth Proportional to 113,242.08, 156,306.72 and 90,738.12

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Solution

The fourth proportional to 113,242.08, 156,306.72 and 90,738.12 is: 125,244.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,242.08 : 156,306.72 = 90,738.12 : x
  2. Step 2: Convert to fraction form
    113,242.08/156,306.72 = 90,738.12/x
  3. Step 3: Cross multiply
    113,242.08x = 156,306.72 × 90,738.12
  4. Step 4: Simplify right side
    113,242.08x = 14,182,977,916.17
  5. Step 5: Solve for x
    x = 14,182,977,916.17/113,242.08
  6. Step 6: Final answer
    x = 125,244.77

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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.