Home / 81,132.90-121,573.92-63,321.33

Finding the Fourth Proportional to 81,132.90, 121,573.92 and 63,321.33

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Solution

The fourth proportional to 81,132.90, 121,573.92 and 63,321.33 is: 94,884.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,132.90 : 121,573.92 = 63,321.33 : x
  2. Step 2: Convert to fraction form
    81,132.90/121,573.92 = 63,321.33/x
  3. Step 3: Cross multiply
    81,132.90x = 121,573.92 × 63,321.33
  4. Step 4: Simplify right side
    81,132.90x = 7,698,222,307.71
  5. Step 5: Solve for x
    x = 7,698,222,307.71/81,132.90
  6. Step 6: Final answer
    x = 94,884.10

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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.