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Finding the Fourth Proportional to 144,622.20, 216,836.10 and 65,695.80

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Solution

The fourth proportional to 144,622.20, 216,836.10 and 65,695.80 is: 98,499.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,622.20 : 216,836.10 = 65,695.80 : x
  2. Step 2: Convert to fraction form
    144,622.20/216,836.10 = 65,695.80/x
  3. Step 3: Cross multiply
    144,622.20x = 216,836.10 × 65,695.80
  4. Step 4: Simplify right side
    144,622.20x = 14,245,221,058.38
  5. Step 5: Solve for x
    x = 14,245,221,058.38/144,622.20
  6. Step 6: Final answer
    x = 98,499.55

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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.