Home / 84,515,999.40-126,773,999.10-83,382,258.60

Finding the Fourth Proportional to 84,515,999.40, 126,773,999.10 and 83,382,258.60

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Solution

The fourth proportional to 84,515,999.40, 126,773,999.10 and 83,382,258.60 is: 125,073,387.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,515,999.40 : 126,773,999.10 = 83,382,258.60 : x
  2. Step 2: Convert to fraction form
    84,515,999.40/126,773,999.10 = 83,382,258.60/x
  3. Step 3: Cross multiply
    84,515,999.40x = 126,773,999.10 × 83,382,258.60
  4. Step 4: Simplify right side
    84,515,999.40x = 10,570,702,376,712,366
  5. Step 5: Solve for x
    x = 10,570,702,376,712,366/84,515,999.40
  6. Step 6: Final answer
    x = 125,073,387.90

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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.