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Finding the Fourth Proportional to 158,781.16, 218,815.95 and 155,863.16

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Solution

The fourth proportional to 158,781.16, 218,815.95 and 155,863.16 is: 214,794.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,781.16 : 218,815.95 = 155,863.16 : x
  2. Step 2: Convert to fraction form
    158,781.16/218,815.95 = 155,863.16/x
  3. Step 3: Cross multiply
    158,781.16x = 218,815.95 × 155,863.16
  4. Step 4: Simplify right side
    158,781.16x = 34,105,344,646.09
  5. Step 5: Solve for x
    x = 34,105,344,646.09/158,781.16
  6. Step 6: Final answer
    x = 214,794.66

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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.