Home / 99,971.11-137,960.16-54,649.29

Finding the Fourth Proportional to 99,971.11, 137,960.16 and 54,649.29

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Solution

The fourth proportional to 99,971.11, 137,960.16 and 54,649.29 is: 75,416.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,971.11 : 137,960.16 = 54,649.29 : x
  2. Step 2: Convert to fraction form
    99,971.11/137,960.16 = 54,649.29/x
  3. Step 3: Cross multiply
    99,971.11x = 137,960.16 × 54,649.29
  4. Step 4: Simplify right side
    99,971.11x = 7,539,424,792.29
  5. Step 5: Solve for x
    x = 7,539,424,792.29/99,971.11
  6. Step 6: Final answer
    x = 75,416.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.