Home / 115,132.79-172,714.91-40,235.56

Finding the Fourth Proportional to 115,132.79, 172,714.91 and 40,235.56

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Solution

The fourth proportional to 115,132.79, 172,714.91 and 40,235.56 is: 60,358.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,132.79 : 172,714.91 = 40,235.56 : x
  2. Step 2: Convert to fraction form
    115,132.79/172,714.91 = 40,235.56/x
  3. Step 3: Cross multiply
    115,132.79x = 172,714.91 × 40,235.56
  4. Step 4: Simplify right side
    115,132.79x = 6,949,281,090.16
  5. Step 5: Solve for x
    x = 6,949,281,090.16/115,132.79
  6. Step 6: Final answer
    x = 60,358.83

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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.