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Finding the Fourth Proportional to 108,572, 149,838.04 and 63,868.64

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Solution

The fourth proportional to 108,572, 149,838.04 and 63,868.64 is: 88,143.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,572 : 149,838.04 = 63,868.64 : x
  2. Step 2: Convert to fraction form
    108,572/149,838.04 = 63,868.64/x
  3. Step 3: Cross multiply
    108,572x = 149,838.04 × 63,868.64
  4. Step 4: Simplify right side
    108,572x = 9,569,951,835.07
  5. Step 5: Solve for x
    x = 9,569,951,835.07/108,572
  6. Step 6: Final answer
    x = 88,143.83

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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.