Home / 84,091,805.70-126,137,708.55-78,989,972.10

Finding the Fourth Proportional to 84,091,805.70, 126,137,708.55 and 78,989,972.10

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Solution

The fourth proportional to 84,091,805.70, 126,137,708.55 and 78,989,972.10 is: 118,484,958.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,091,805.70 : 126,137,708.55 = 78,989,972.10 : x
  2. Step 2: Convert to fraction form
    84,091,805.70/126,137,708.55 = 78,989,972.10/x
  3. Step 3: Cross multiply
    84,091,805.70x = 126,137,708.55 × 78,989,972.10
  4. Step 4: Simplify right side
    84,091,805.70x = 9,963,614,079,122,430
  5. Step 5: Solve for x
    x = 9,963,614,079,122,430/84,091,805.70
  6. Step 6: Final answer
    x = 118,484,958.15

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Double scale
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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.