Home / 87,401.32-130,984.86-81,802.60

Finding the Fourth Proportional to 87,401.32, 130,984.86 and 81,802.60

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Solution

The fourth proportional to 87,401.32, 130,984.86 and 81,802.60 is: 122,594.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,401.32 : 130,984.86 = 81,802.60 : x
  2. Step 2: Convert to fraction form
    87,401.32/130,984.86 = 81,802.60/x
  3. Step 3: Cross multiply
    87,401.32x = 130,984.86 × 81,802.60
  4. Step 4: Simplify right side
    87,401.32x = 10,714,902,108.64
  5. Step 5: Solve for x
    x = 10,714,902,108.64/87,401.32
  6. Step 6: Final answer
    x = 122,594.28

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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.