Home / 81,468,221.40-122,202,332.10-70,945,689.60

Finding the Fourth Proportional to 81,468,221.40, 122,202,332.10 and 70,945,689.60

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Solution

The fourth proportional to 81,468,221.40, 122,202,332.10 and 70,945,689.60 is: 106,418,534.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,468,221.40 : 122,202,332.10 = 70,945,689.60 : x
  2. Step 2: Convert to fraction form
    81,468,221.40/122,202,332.10 = 70,945,689.60/x
  3. Step 3: Cross multiply
    81,468,221.40x = 122,202,332.10 × 70,945,689.60
  4. Step 4: Simplify right side
    81,468,221.40x = 8,669,728,721,562,715
  5. Step 5: Solve for x
    x = 8,669,728,721,562,715/81,468,221.40
  6. Step 6: Final answer
    x = 106,418,534.40

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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.