Home / 99,642.20-137,428.47-63,835.54

Finding the Fourth Proportional to 99,642.20, 137,428.47 and 63,835.54

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Solution

The fourth proportional to 99,642.20, 137,428.47 and 63,835.54 is: 88,043.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,642.20 : 137,428.47 = 63,835.54 : x
  2. Step 2: Convert to fraction form
    99,642.20/137,428.47 = 63,835.54/x
  3. Step 3: Cross multiply
    99,642.20x = 137,428.47 × 63,835.54
  4. Step 4: Simplify right side
    99,642.20x = 8,772,820,250.25
  5. Step 5: Solve for x
    x = 8,772,820,250.25/99,642.20
  6. Step 6: Final answer
    x = 88,043.23

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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.