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Finding the Fourth Proportional to 159,710.64, 220,392.48 and 91,680.48

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Solution

The fourth proportional to 159,710.64, 220,392.48 and 91,680.48 is: 126,514.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,710.64 : 220,392.48 = 91,680.48 : x
  2. Step 2: Convert to fraction form
    159,710.64/220,392.48 = 91,680.48/x
  3. Step 3: Cross multiply
    159,710.64x = 220,392.48 × 91,680.48
  4. Step 4: Simplify right side
    159,710.64x = 20,205,688,354.79
  5. Step 5: Solve for x
    x = 20,205,688,354.79/159,710.64
  6. Step 6: Final answer
    x = 126,514.35

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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.