Home / 153,982.20-231,210.90-83,998.20

Finding the Fourth Proportional to 153,982.20, 231,210.90 and 83,998.20

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Solution

The fourth proportional to 153,982.20, 231,210.90 and 83,998.20 is: 126,126.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,982.20 : 231,210.90 = 83,998.20 : x
  2. Step 2: Convert to fraction form
    153,982.20/231,210.90 = 83,998.20/x
  3. Step 3: Cross multiply
    153,982.20x = 231,210.90 × 83,998.20
  4. Step 4: Simplify right side
    153,982.20x = 19,421,299,420.38
  5. Step 5: Solve for x
    x = 19,421,299,420.38/153,982.20
  6. Step 6: Final answer
    x = 126,126.91

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1.5x scale

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.