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Finding the Fourth Proportional to 110,988.60, 153,181.46 and 87,294.90

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Solution

The fourth proportional to 110,988.60, 153,181.46 and 87,294.90 is: 120,480.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,988.60 : 153,181.46 = 87,294.90 : x
  2. Step 2: Convert to fraction form
    110,988.60/153,181.46 = 87,294.90/x
  3. Step 3: Cross multiply
    110,988.60x = 153,181.46 × 87,294.90
  4. Step 4: Simplify right side
    110,988.60x = 13,371,960,232.55
  5. Step 5: Solve for x
    x = 13,371,960,232.55/110,988.60
  6. Step 6: Final answer
    x = 120,480.48

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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.