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Finding the Fourth Proportional to 125,300.56, 172,913.16 and 71,585.14

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Solution

The fourth proportional to 125,300.56, 172,913.16 and 71,585.14 is: 98,786.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,300.56 : 172,913.16 = 71,585.14 : x
  2. Step 2: Convert to fraction form
    125,300.56/172,913.16 = 71,585.14/x
  3. Step 3: Cross multiply
    125,300.56x = 172,913.16 × 71,585.14
  4. Step 4: Simplify right side
    125,300.56x = 12,378,012,766.44
  5. Step 5: Solve for x
    x = 12,378,012,766.44/125,300.56
  6. Step 6: Final answer
    x = 98,786.57

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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.