Home / 81,873,497.40-122,810,246.10-75,177,340.80

Finding the Fourth Proportional to 81,873,497.40, 122,810,246.10 and 75,177,340.80

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Solution

The fourth proportional to 81,873,497.40, 122,810,246.10 and 75,177,340.80 is: 112,766,011.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,873,497.40 : 122,810,246.10 = 75,177,340.80 : x
  2. Step 2: Convert to fraction form
    81,873,497.40/122,810,246.10 = 75,177,340.80/x
  3. Step 3: Cross multiply
    81,873,497.40x = 122,810,246.10 × 75,177,340.80
  4. Step 4: Simplify right side
    81,873,497.40x = 9,232,547,724,791,570
  5. Step 5: Solve for x
    x = 9,232,547,724,791,570/81,873,497.40
  6. Step 6: Final answer
    x = 112,766,011.20

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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.