Home / 137,420.28-206,159.99-42,648.66

Finding the Fourth Proportional to 137,420.28, 206,159.99 and 42,648.66

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Solution

The fourth proportional to 137,420.28, 206,159.99 and 42,648.66 is: 63,982.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,420.28 : 206,159.99 = 42,648.66 : x
  2. Step 2: Convert to fraction form
    137,420.28/206,159.99 = 42,648.66/x
  3. Step 3: Cross multiply
    137,420.28x = 206,159.99 × 42,648.66
  4. Step 4: Simplify right side
    137,420.28x = 8,792,447,105.87
  5. Step 5: Solve for x
    x = 8,792,447,105.87/137,420.28
  6. Step 6: Final answer
    x = 63,982.17

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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.