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Finding the Fourth Proportional to 109,346.55, 150,926.39 and 71,201.31

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Solution

The fourth proportional to 109,346.55, 150,926.39 and 71,201.31 is: 98,276.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,346.55 : 150,926.39 = 71,201.31 : x
  2. Step 2: Convert to fraction form
    109,346.55/150,926.39 = 71,201.31/x
  3. Step 3: Cross multiply
    109,346.55x = 150,926.39 × 71,201.31
  4. Step 4: Simplify right side
    109,346.55x = 10,746,156,681.57
  5. Step 5: Solve for x
    x = 10,746,156,681.57/109,346.55
  6. Step 6: Final answer
    x = 98,276.14

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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.