Home / 121,976.20-182,607.90-86,984.20

Finding the Fourth Proportional to 121,976.20, 182,607.90 and 86,984.20

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Solution

The fourth proportional to 121,976.20, 182,607.90 and 86,984.20 is: 130,222.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,976.20 : 182,607.90 = 86,984.20 : x
  2. Step 2: Convert to fraction form
    121,976.20/182,607.90 = 86,984.20/x
  3. Step 3: Cross multiply
    121,976.20x = 182,607.90 × 86,984.20
  4. Step 4: Simplify right side
    121,976.20x = 15,884,002,095.18
  5. Step 5: Solve for x
    x = 15,884,002,095.18/121,976.20
  6. Step 6: Final answer
    x = 130,222.14

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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.