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Finding the Fourth Proportional to 169,984.10, 254,976.15 and 76,672.10

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Solution

The fourth proportional to 169,984.10, 254,976.15 and 76,672.10 is: 115,008.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,984.10 : 254,976.15 = 76,672.10 : x
  2. Step 2: Convert to fraction form
    169,984.10/254,976.15 = 76,672.10/x
  3. Step 3: Cross multiply
    169,984.10x = 254,976.15 × 76,672.10
  4. Step 4: Simplify right side
    169,984.10x = 19,549,556,870.42
  5. Step 5: Solve for x
    x = 19,549,556,870.42/169,984.10
  6. Step 6: Final answer
    x = 115,008.15

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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.