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Finding the Fourth Proportional to 147,839.80, 221,792.10 and 72,995.80

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Solution

The fourth proportional to 147,839.80, 221,792.10 and 72,995.80 is: 109,509.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,839.80 : 221,792.10 = 72,995.80 : x
  2. Step 2: Convert to fraction form
    147,839.80/221,792.10 = 72,995.80/x
  3. Step 3: Cross multiply
    147,839.80x = 221,792.10 × 72,995.80
  4. Step 4: Simplify right side
    147,839.80x = 16,189,891,773.18
  5. Step 5: Solve for x
    x = 16,189,891,773.18/147,839.80
  6. Step 6: Final answer
    x = 109,509.70

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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.