Home / 99,720.36-137,536.28-63,913.80

Finding the Fourth Proportional to 99,720.36, 137,536.28 and 63,913.80

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Solution

The fourth proportional to 99,720.36, 137,536.28 and 63,913.80 is: 88,151.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,720.36 : 137,536.28 = 63,913.80 : x
  2. Step 2: Convert to fraction form
    99,720.36/137,536.28 = 63,913.80/x
  3. Step 3: Cross multiply
    99,720.36x = 137,536.28 × 63,913.80
  4. Step 4: Simplify right side
    99,720.36x = 8,790,466,292.66
  5. Step 5: Solve for x
    x = 8,790,466,292.66/99,720.36
  6. Step 6: Final answer
    x = 88,151.17

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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.