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Finding the Fourth Proportional to 88,704.10, 133,056.15 and 85,204.90

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Solution

The fourth proportional to 88,704.10, 133,056.15 and 85,204.90 is: 127,807.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,704.10 : 133,056.15 = 85,204.90 : x
  2. Step 2: Convert to fraction form
    88,704.10/133,056.15 = 85,204.90/x
  3. Step 3: Cross multiply
    88,704.10x = 133,056.15 × 85,204.90
  4. Step 4: Simplify right side
    88,704.10x = 11,337,035,955.14
  5. Step 5: Solve for x
    x = 11,337,035,955.14/88,704.10
  6. Step 6: Final answer
    x = 127,807.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.