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Finding the Fourth Proportional to 125,174.77, 172,748.10 and 71,477.04

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Solution

The fourth proportional to 125,174.77, 172,748.10 and 71,477.04 is: 98,642.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,174.77 : 172,748.10 = 71,477.04 : x
  2. Step 2: Convert to fraction form
    125,174.77/172,748.10 = 71,477.04/x
  3. Step 3: Cross multiply
    125,174.77x = 172,748.10 × 71,477.04
  4. Step 4: Simplify right side
    125,174.77x = 12,347,521,989.88
  5. Step 5: Solve for x
    x = 12,347,521,989.88/125,174.77
  6. Step 6: Final answer
    x = 98,642.26

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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.