Home / 82,703,604.30-124,055,406.45-81,428,145.90

Finding the Fourth Proportional to 82,703,604.30, 124,055,406.45 and 81,428,145.90

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Solution

The fourth proportional to 82,703,604.30, 124,055,406.45 and 81,428,145.90 is: 122,142,218.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,703,604.30 : 124,055,406.45 = 81,428,145.90 : x
  2. Step 2: Convert to fraction form
    82,703,604.30/124,055,406.45 = 81,428,145.90/x
  3. Step 3: Cross multiply
    82,703,604.30x = 124,055,406.45 × 81,428,145.90
  4. Step 4: Simplify right side
    82,703,604.30x = 10,101,601,736,094,402
  5. Step 5: Solve for x
    x = 10,101,601,736,094,402/82,703,604.30
  6. Step 6: Final answer
    x = 122,142,218.85

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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.