Home / 84,006,200.70-126,009,301.05-78,904,367.10

Finding the Fourth Proportional to 84,006,200.70, 126,009,301.05 and 78,904,367.10

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Solution

The fourth proportional to 84,006,200.70, 126,009,301.05 and 78,904,367.10 is: 118,356,550.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,006,200.70 : 126,009,301.05 = 78,904,367.10 : x
  2. Step 2: Convert to fraction form
    84,006,200.70/126,009,301.05 = 78,904,367.10/x
  3. Step 3: Cross multiply
    84,006,200.70x = 126,009,301.05 × 78,904,367.10
  4. Step 4: Simplify right side
    84,006,200.70x = 9,942,684,148,063,614
  5. Step 5: Solve for x
    x = 9,942,684,148,063,614/84,006,200.70
  6. Step 6: Final answer
    x = 118,356,550.65

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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.