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Finding the Fourth Proportional to 125,072.10, 172,583.46 and 71,353.98

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Solution

The fourth proportional to 125,072.10, 172,583.46 and 71,353.98 is: 98,459.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,072.10 : 172,583.46 = 71,353.98 : x
  2. Step 2: Convert to fraction form
    125,072.10/172,583.46 = 71,353.98/x
  3. Step 3: Cross multiply
    125,072.10x = 172,583.46 × 71,353.98
  4. Step 4: Simplify right side
    125,072.10x = 12,314,516,753.17
  5. Step 5: Solve for x
    x = 12,314,516,753.17/125,072.10
  6. Step 6: Final answer
    x = 98,459.34

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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.