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Finding the Fourth Proportional to 144,555.86, 216,871.16 and 55,785.53

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Solution

The fourth proportional to 144,555.86, 216,871.16 and 55,785.53 is: 83,692.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,555.86 : 216,871.16 = 55,785.53 : x
  2. Step 2: Convert to fraction form
    144,555.86/216,871.16 = 55,785.53/x
  3. Step 3: Cross multiply
    144,555.86x = 216,871.16 × 55,785.53
  4. Step 4: Simplify right side
    144,555.86x = 12,098,272,865.57
  5. Step 5: Solve for x
    x = 12,098,272,865.57/144,555.86
  6. Step 6: Final answer
    x = 83,692.72

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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.