Home / 87,222.40-130,833.60-80,807.20

Finding the Fourth Proportional to 87,222.40, 130,833.60 and 80,807.20

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Solution

The fourth proportional to 87,222.40, 130,833.60 and 80,807.20 is: 121,210.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,222.40 : 130,833.60 = 80,807.20 : x
  2. Step 2: Convert to fraction form
    87,222.40/130,833.60 = 80,807.20/x
  3. Step 3: Cross multiply
    87,222.40x = 130,833.60 × 80,807.20
  4. Step 4: Simplify right side
    87,222.40x = 10,572,296,881.92
  5. Step 5: Solve for x
    x = 10,572,296,881.92/87,222.40
  6. Step 6: Final answer
    x = 121,210.80

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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.