Home / 87,149,187.20-130,723,780.80-80,580,022.40

Finding the Fourth Proportional to 87,149,187.20, 130,723,780.80 and 80,580,022.40

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Solution

The fourth proportional to 87,149,187.20, 130,723,780.80 and 80,580,022.40 is: 120,870,033.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,149,187.20 : 130,723,780.80 = 80,580,022.40 : x
  2. Step 2: Convert to fraction form
    87,149,187.20/130,723,780.80 = 80,580,022.40/x
  3. Step 3: Cross multiply
    87,149,187.20x = 130,723,780.80 × 80,580,022.40
  4. Step 4: Simplify right side
    87,149,187.20x = 10,533,725,185,076,690
  5. Step 5: Solve for x
    x = 10,533,725,185,076,690/87,149,187.20
  6. Step 6: Final answer
    x = 120,870,033.60

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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.