Home / 87,120,419.20-130,680,628.80-82,868,891.20

Finding the Fourth Proportional to 87,120,419.20, 130,680,628.80 and 82,868,891.20

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Solution

The fourth proportional to 87,120,419.20, 130,680,628.80 and 82,868,891.20 is: 124,303,336.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,120,419.20 : 130,680,628.80 = 82,868,891.20 : x
  2. Step 2: Convert to fraction form
    87,120,419.20/130,680,628.80 = 82,868,891.20/x
  3. Step 3: Cross multiply
    87,120,419.20x = 130,680,628.80 × 82,868,891.20
  4. Step 4: Simplify right side
    87,120,419.20x = 10,829,358,809,974,786
  5. Step 5: Solve for x
    x = 10,829,358,809,974,786/87,120,419.20
  6. Step 6: Final answer
    x = 124,303,336.80

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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.