Home / 82,482,145.20-123,723,217.80-81,206,686.80

Finding the Fourth Proportional to 82,482,145.20, 123,723,217.80 and 81,206,686.80

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Solution

The fourth proportional to 82,482,145.20, 123,723,217.80 and 81,206,686.80 is: 121,810,030.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,482,145.20 : 123,723,217.80 = 81,206,686.80 : x
  2. Step 2: Convert to fraction form
    82,482,145.20/123,723,217.80 = 81,206,686.80/x
  3. Step 3: Cross multiply
    82,482,145.20x = 123,723,217.80 × 81,206,686.80
  4. Step 4: Simplify right side
    82,482,145.20x = 10,047,152,597,772,784
  5. Step 5: Solve for x
    x = 10,047,152,597,772,784/82,482,145.20
  6. Step 6: Final answer
    x = 121,810,030.20

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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.