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Finding the Fourth Proportional to 115,359.10, 172,654.65 and 83,679.10

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Solution

The fourth proportional to 115,359.10, 172,654.65 and 83,679.10 is: 125,240.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,359.10 : 172,654.65 = 83,679.10 : x
  2. Step 2: Convert to fraction form
    115,359.10/172,654.65 = 83,679.10/x
  3. Step 3: Cross multiply
    115,359.10x = 172,654.65 × 83,679.10
  4. Step 4: Simplify right side
    115,359.10x = 14,447,585,722.82
  5. Step 5: Solve for x
    x = 14,447,585,722.82/115,359.10
  6. Step 6: Final answer
    x = 125,240.10

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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.