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Finding the Fourth Proportional to 100,513.80, 151,493.19 and 86,641.26

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Solution

The fourth proportional to 100,513.80, 151,493.19 and 86,641.26 is: 130,584.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,513.80 : 151,493.19 = 86,641.26 : x
  2. Step 2: Convert to fraction form
    100,513.80/151,493.19 = 86,641.26/x
  3. Step 3: Cross multiply
    100,513.80x = 151,493.19 × 86,641.26
  4. Step 4: Simplify right side
    100,513.80x = 13,125,560,863.02
  5. Step 5: Solve for x
    x = 13,125,560,863.02/100,513.80
  6. Step 6: Final answer
    x = 130,584.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.