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Finding the Fourth Proportional to 113,264.80, 156,337.90 and 75,030.57

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Solution

The fourth proportional to 113,264.80, 156,337.90 and 75,030.57 is: 103,563.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,264.80 : 156,337.90 = 75,030.57 : x
  2. Step 2: Convert to fraction form
    113,264.80/156,337.90 = 75,030.57/x
  3. Step 3: Cross multiply
    113,264.80x = 156,337.90 × 75,030.57
  4. Step 4: Simplify right side
    113,264.80x = 11,730,121,562.03
  5. Step 5: Solve for x
    x = 11,730,121,562.03/113,264.80
  6. Step 6: Final answer
    x = 103,563.70

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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.