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Finding the Fourth Proportional to 138,401.87, 207,441.51 and 63,529.92

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Solution

The fourth proportional to 138,401.87, 207,441.51 and 63,529.92 is: 95,220.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,401.87 : 207,441.51 = 63,529.92 : x
  2. Step 2: Convert to fraction form
    138,401.87/207,441.51 = 63,529.92/x
  3. Step 3: Cross multiply
    138,401.87x = 207,441.51 × 63,529.92
  4. Step 4: Simplify right side
    138,401.87x = 13,178,742,296.74
  5. Step 5: Solve for x
    x = 13,178,742,296.74/138,401.87
  6. Step 6: Final answer
    x = 95,220.84

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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.