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Finding the Fourth Proportional to 139,320.71, 192,257.44 and 75,657.14

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Solution

The fourth proportional to 139,320.71, 192,257.44 and 75,657.14 is: 104,404.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,320.71 : 192,257.44 = 75,657.14 : x
  2. Step 2: Convert to fraction form
    139,320.71/192,257.44 = 75,657.14/x
  3. Step 3: Cross multiply
    139,320.71x = 192,257.44 × 75,657.14
  4. Step 4: Simplify right side
    139,320.71x = 14,545,646,903.69
  5. Step 5: Solve for x
    x = 14,545,646,903.69/139,320.71
  6. Step 6: Final answer
    x = 104,404.06

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1.5x scale

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.