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Finding the Fourth Proportional to 125,245.71, 172,835.51 and 71,529.62

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Solution

The fourth proportional to 125,245.71, 172,835.51 and 71,529.62 is: 98,708.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,245.71 : 172,835.51 = 71,529.62 : x
  2. Step 2: Convert to fraction form
    125,245.71/172,835.51 = 71,529.62/x
  3. Step 3: Cross multiply
    125,245.71x = 172,835.51 × 71,529.62
  4. Step 4: Simplify right side
    125,245.71x = 12,362,857,130.98
  5. Step 5: Solve for x
    x = 12,362,857,130.98/125,245.71
  6. Step 6: Final answer
    x = 98,708.83

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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.