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Finding the Fourth Proportional to 145,619.31, 218,443.87 and 55,737.54

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Solution

The fourth proportional to 145,619.31, 218,443.87 and 55,737.54 is: 83,612.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,619.31 : 218,443.87 = 55,737.54 : x
  2. Step 2: Convert to fraction form
    145,619.31/218,443.87 = 55,737.54/x
  3. Step 3: Cross multiply
    145,619.31x = 218,443.87 × 55,737.54
  4. Step 4: Simplify right side
    145,619.31x = 12,175,523,941.88
  5. Step 5: Solve for x
    x = 12,175,523,941.88/145,619.31
  6. Step 6: Final answer
    x = 83,612.02

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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.