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Finding the Fourth Proportional to 155,993.29, 215,269.95 and 84,373.14

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Solution

The fourth proportional to 155,993.29, 215,269.95 and 84,373.14 is: 116,434.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,993.29 : 215,269.95 = 84,373.14 : x
  2. Step 2: Convert to fraction form
    155,993.29/215,269.95 = 84,373.14/x
  3. Step 3: Cross multiply
    155,993.29x = 215,269.95 × 84,373.14
  4. Step 4: Simplify right side
    155,993.29x = 18,163,002,752.80
  5. Step 5: Solve for x
    x = 18,163,002,752.80/155,993.29
  6. Step 6: Final answer
    x = 116,434.51

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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.