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Finding the Fourth Proportional to 158,876.38, 219,268.86 and 91,808.38

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Solution

The fourth proportional to 158,876.38, 219,268.86 and 91,808.38 is: 126,706.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,876.38 : 219,268.86 = 91,808.38 : x
  2. Step 2: Convert to fraction form
    158,876.38/219,268.86 = 91,808.38/x
  3. Step 3: Cross multiply
    158,876.38x = 219,268.86 × 91,808.38
  4. Step 4: Simplify right side
    158,876.38x = 20,130,717,265.66
  5. Step 5: Solve for x
    x = 20,130,717,265.66/158,876.38
  6. Step 6: Final answer
    x = 126,706.80

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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.