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Finding the Fourth Proportional to 158,863.68, 219,170.88 and 90,866.88

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Solution

The fourth proportional to 158,863.68, 219,170.88 and 90,866.88 is: 125,361.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,863.68 : 219,170.88 = 90,866.88 : x
  2. Step 2: Convert to fraction form
    158,863.68/219,170.88 = 90,866.88/x
  3. Step 3: Cross multiply
    158,863.68x = 219,170.88 × 90,866.88
  4. Step 4: Simplify right side
    158,863.68x = 19,915,374,052.45
  5. Step 5: Solve for x
    x = 19,915,374,052.45/158,863.68
  6. Step 6: Final answer
    x = 125,361.40

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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.