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Finding the Fourth Proportional to 159,960.48, 220,758.51 and 91,999.45

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Solution

The fourth proportional to 159,960.48, 220,758.51 and 91,999.45 is: 126,966.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,960.48 : 220,758.51 = 91,999.45 : x
  2. Step 2: Convert to fraction form
    159,960.48/220,758.51 = 91,999.45/x
  3. Step 3: Cross multiply
    159,960.48x = 220,758.51 × 91,999.45
  4. Step 4: Simplify right side
    159,960.48x = 20,309,661,502.82
  5. Step 5: Solve for x
    x = 20,309,661,502.82/159,960.48
  6. Step 6: Final answer
    x = 126,966.75

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1.5x scale

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.