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Finding the Fourth Proportional to 159,350.70, 219,895.38 and 91,364.40

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Solution

The fourth proportional to 159,350.70, 219,895.38 and 91,364.40 is: 126,077.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,350.70 : 219,895.38 = 91,364.40 : x
  2. Step 2: Convert to fraction form
    159,350.70/219,895.38 = 91,364.40/x
  3. Step 3: Cross multiply
    159,350.70x = 219,895.38 × 91,364.40
  4. Step 4: Simplify right side
    159,350.70x = 20,090,609,456.47
  5. Step 5: Solve for x
    x = 20,090,609,456.47/159,350.70
  6. Step 6: Final answer
    x = 126,077.95

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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.