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Finding the Fourth Proportional to 105,761.52, 145,937.16 and 63,311.04

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Solution

The fourth proportional to 105,761.52, 145,937.16 and 63,311.04 is: 87,361.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,761.52 : 145,937.16 = 63,311.04 : x
  2. Step 2: Convert to fraction form
    105,761.52/145,937.16 = 63,311.04/x
  3. Step 3: Cross multiply
    105,761.52x = 145,937.16 × 63,311.04
  4. Step 4: Simplify right side
    105,761.52x = 9,239,433,374.25
  5. Step 5: Solve for x
    x = 9,239,433,374.25/105,761.52
  6. Step 6: Final answer
    x = 87,361.01

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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.