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Finding the Fourth Proportional to 144,638.70, 216,860.85 and 65,712.30

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Solution

The fourth proportional to 144,638.70, 216,860.85 and 65,712.30 is: 98,524.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,638.70 : 216,860.85 = 65,712.30 : x
  2. Step 2: Convert to fraction form
    144,638.70/216,860.85 = 65,712.30/x
  3. Step 3: Cross multiply
    144,638.70x = 216,860.85 × 65,712.30
  4. Step 4: Simplify right side
    144,638.70x = 14,250,425,233.46
  5. Step 5: Solve for x
    x = 14,250,425,233.46/144,638.70
  6. Step 6: Final answer
    x = 98,524.29

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1.5x scale

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.