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Finding the Fourth Proportional to 145,424.59, 218,253.54 and 75,323.95

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Solution

The fourth proportional to 145,424.59, 218,253.54 and 75,323.95 is: 113,046.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,424.59 : 218,253.54 = 75,323.95 : x
  2. Step 2: Convert to fraction form
    145,424.59/218,253.54 = 75,323.95/x
  3. Step 3: Cross multiply
    145,424.59x = 218,253.54 × 75,323.95
  4. Step 4: Simplify right side
    145,424.59x = 16,439,718,734.28
  5. Step 5: Solve for x
    x = 16,439,718,734.28/145,424.59
  6. Step 6: Final answer
    x = 113,046.35

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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.