Home / 115,002.20-172,511.40-65,106.20

Finding the Fourth Proportional to 115,002.20, 172,511.40 and 65,106.20

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Solution

The fourth proportional to 115,002.20, 172,511.40 and 65,106.20 is: 97,663.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,002.20 : 172,511.40 = 65,106.20 : x
  2. Step 2: Convert to fraction form
    115,002.20/172,511.40 = 65,106.20/x
  3. Step 3: Cross multiply
    115,002.20x = 172,511.40 × 65,106.20
  4. Step 4: Simplify right side
    115,002.20x = 11,231,561,710.68
  5. Step 5: Solve for x
    x = 11,231,561,710.68/115,002.20
  6. Step 6: Final answer
    x = 97,663.89

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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.