Home / 87,120,431.20-130,680,646.80-82,868,903.20

Finding the Fourth Proportional to 87,120,431.20, 130,680,646.80 and 82,868,903.20

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Solution

The fourth proportional to 87,120,431.20, 130,680,646.80 and 82,868,903.20 is: 124,303,354.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,120,431.20 : 130,680,646.80 = 82,868,903.20 : x
  2. Step 2: Convert to fraction form
    87,120,431.20/130,680,646.80 = 82,868,903.20/x
  3. Step 3: Cross multiply
    87,120,431.20x = 130,680,646.80 × 82,868,903.20
  4. Step 4: Simplify right side
    87,120,431.20x = 10,829,361,869,782,590
  5. Step 5: Solve for x
    x = 10,829,361,869,782,590/87,120,431.20
  6. Step 6: Final answer
    x = 124,303,354.80

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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.