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Finding the Fourth Proportional to 144,616.20, 216,827.10 and 65,689.80

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Solution

The fourth proportional to 144,616.20, 216,827.10 and 65,689.80 is: 98,490.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,616.20 : 216,827.10 = 65,689.80 : x
  2. Step 2: Convert to fraction form
    144,616.20/216,827.10 = 65,689.80/x
  3. Step 3: Cross multiply
    144,616.20x = 216,827.10 × 65,689.80
  4. Step 4: Simplify right side
    144,616.20x = 14,243,328,833.58
  5. Step 5: Solve for x
    x = 14,243,328,833.58/144,616.20
  6. Step 6: Final answer
    x = 98,490.55

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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.