Home / 81,189,702.90-121,784,554.35-73,127,546.10

Finding the Fourth Proportional to 81,189,702.90, 121,784,554.35 and 73,127,546.10

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Solution

The fourth proportional to 81,189,702.90, 121,784,554.35 and 73,127,546.10 is: 109,691,319.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,189,702.90 : 121,784,554.35 = 73,127,546.10 : x
  2. Step 2: Convert to fraction form
    81,189,702.90/121,784,554.35 = 73,127,546.10/x
  3. Step 3: Cross multiply
    81,189,702.90x = 121,784,554.35 × 73,127,546.10
  4. Step 4: Simplify right side
    81,189,702.90x = 8,905,805,612,497,579
  5. Step 5: Solve for x
    x = 8,905,805,612,497,579/81,189,702.90
  6. Step 6: Final answer
    x = 109,691,319.15

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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.