Home / 115,039.76-172,638.46-40,159.92

Finding the Fourth Proportional to 115,039.76, 172,638.46 and 40,159.92

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Solution

The fourth proportional to 115,039.76, 172,638.46 and 40,159.92 is: 60,267.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,039.76 : 172,638.46 = 40,159.92 : x
  2. Step 2: Convert to fraction form
    115,039.76/172,638.46 = 40,159.92/x
  3. Step 3: Cross multiply
    115,039.76x = 172,638.46 × 40,159.92
  4. Step 4: Simplify right side
    115,039.76x = 6,933,146,742.52
  5. Step 5: Solve for x
    x = 6,933,146,742.52/115,039.76
  6. Step 6: Final answer
    x = 60,267.40

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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.