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Finding the Fourth Proportional to 128,552.95, 192,953.81 and 62,039.90

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Solution

The fourth proportional to 128,552.95, 192,953.81 and 62,039.90 is: 93,119.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,552.95 : 192,953.81 = 62,039.90 : x
  2. Step 2: Convert to fraction form
    128,552.95/192,953.81 = 62,039.90/x
  3. Step 3: Cross multiply
    128,552.95x = 192,953.81 × 62,039.90
  4. Step 4: Simplify right side
    128,552.95x = 11,970,835,077.02
  5. Step 5: Solve for x
    x = 11,970,835,077.02/128,552.95
  6. Step 6: Final answer
    x = 93,119.88

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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.