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Finding the Fourth Proportional to 144,647.70, 216,874.35 and 65,721.30

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Solution

The fourth proportional to 144,647.70, 216,874.35 and 65,721.30 is: 98,537.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,647.70 : 216,874.35 = 65,721.30 : x
  2. Step 2: Convert to fraction form
    144,647.70/216,874.35 = 65,721.30/x
  3. Step 3: Cross multiply
    144,647.70x = 216,874.35 × 65,721.30
  4. Step 4: Simplify right side
    144,647.70x = 14,253,264,218.66
  5. Step 5: Solve for x
    x = 14,253,264,218.66/144,647.70
  6. Step 6: Final answer
    x = 98,537.79

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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.