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Finding the Fourth Proportional to 138,710.44, 207,898.35 and 67,526.39

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Solution

The fourth proportional to 138,710.44, 207,898.35 and 67,526.39 is: 101,208.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,710.44 : 207,898.35 = 67,526.39 : x
  2. Step 2: Convert to fraction form
    138,710.44/207,898.35 = 67,526.39/x
  3. Step 3: Cross multiply
    138,710.44x = 207,898.35 × 67,526.39
  4. Step 4: Simplify right side
    138,710.44x = 14,038,625,328.98
  5. Step 5: Solve for x
    x = 14,038,625,328.98/138,710.44
  6. Step 6: Final answer
    x = 101,208.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.