Home / 84,400,807.80-126,601,211.70-78,732,103.80

Finding the Fourth Proportional to 84,400,807.80, 126,601,211.70 and 78,732,103.80

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Solution

The fourth proportional to 84,400,807.80, 126,601,211.70 and 78,732,103.80 is: 118,098,155.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,400,807.80 : 126,601,211.70 = 78,732,103.80 : x
  2. Step 2: Convert to fraction form
    84,400,807.80/126,601,211.70 = 78,732,103.80/x
  3. Step 3: Cross multiply
    84,400,807.80x = 126,601,211.70 × 78,732,103.80
  4. Step 4: Simplify right side
    84,400,807.80x = 9,967,579,740,770,174
  5. Step 5: Solve for x
    x = 9,967,579,740,770,174/84,400,807.80
  6. Step 6: Final answer
    x = 118,098,155.70

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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.