Home / 83,990,812.20-125,986,218.30-69,641,905.20

Finding the Fourth Proportional to 83,990,812.20, 125,986,218.30 and 69,641,905.20

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Solution

The fourth proportional to 83,990,812.20, 125,986,218.30 and 69,641,905.20 is: 104,462,857.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,990,812.20 : 125,986,218.30 = 69,641,905.20 : x
  2. Step 2: Convert to fraction form
    83,990,812.20/125,986,218.30 = 69,641,905.20/x
  3. Step 3: Cross multiply
    83,990,812.20x = 125,986,218.30 × 69,641,905.20
  4. Step 4: Simplify right side
    83,990,812.20x = 8,773,920,271,355,105
  5. Step 5: Solve for x
    x = 8,773,920,271,355,105/83,990,812.20
  6. Step 6: Final answer
    x = 104,462,857.80

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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.