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Finding the Fourth Proportional to 141,515.16, 195,209.82 and 88,431

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Solution

The fourth proportional to 141,515.16, 195,209.82 and 88,431 is: 121,984.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,515.16 : 195,209.82 = 88,431 : x
  2. Step 2: Convert to fraction form
    141,515.16/195,209.82 = 88,431/x
  3. Step 3: Cross multiply
    141,515.16x = 195,209.82 × 88,431
  4. Step 4: Simplify right side
    141,515.16x = 17,262,599,592.42
  5. Step 5: Solve for x
    x = 17,262,599,592.42/141,515.16
  6. Step 6: Final answer
    x = 121,984.10

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.