Home / 91,584,080.70-137,376,121.05-85,915,376.70

Finding the Fourth Proportional to 91,584,080.70, 137,376,121.05 and 85,915,376.70

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Solution

The fourth proportional to 91,584,080.70, 137,376,121.05 and 85,915,376.70 is: 128,873,065.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,584,080.70 : 137,376,121.05 = 85,915,376.70 : x
  2. Step 2: Convert to fraction form
    91,584,080.70/137,376,121.05 = 85,915,376.70/x
  3. Step 3: Cross multiply
    91,584,080.70x = 137,376,121.05 × 85,915,376.70
  4. Step 4: Simplify right side
    91,584,080.70x = 11,802,721,189,595,550
  5. Step 5: Solve for x
    x = 11,802,721,189,595,550/91,584,080.70
  6. Step 6: Final answer
    x = 128,873,065.05

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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.