Home / 99,433.13-137,217.74-54,721.13

Finding the Fourth Proportional to 99,433.13, 137,217.74 and 54,721.13

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Solution

The fourth proportional to 99,433.13, 137,217.74 and 54,721.13 is: 75,515.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,433.13 : 137,217.74 = 54,721.13 : x
  2. Step 2: Convert to fraction form
    99,433.13/137,217.74 = 54,721.13/x
  3. Step 3: Cross multiply
    99,433.13x = 137,217.74 × 54,721.13
  4. Step 4: Simplify right side
    99,433.13x = 7,508,708,829.15
  5. Step 5: Solve for x
    x = 7,508,708,829.15/99,433.13
  6. Step 6: Final answer
    x = 75,515.16

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1.5x scale

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.