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Finding the Fourth Proportional to 170,747.60, 235,521.72 and 103,679.60

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Solution

The fourth proportional to 170,747.60, 235,521.72 and 103,679.60 is: 143,011.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,747.60 : 235,521.72 = 103,679.60 : x
  2. Step 2: Convert to fraction form
    170,747.60/235,521.72 = 103,679.60/x
  3. Step 3: Cross multiply
    170,747.60x = 235,521.72 × 103,679.60
  4. Step 4: Simplify right side
    170,747.60x = 24,418,797,720.91
  5. Step 5: Solve for x
    x = 24,418,797,720.91/170,747.60
  6. Step 6: Final answer
    x = 143,011.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.