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Finding the Fourth Proportional to 133,050.60, 199,575.90 and 85,811.40

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Solution

The fourth proportional to 133,050.60, 199,575.90 and 85,811.40 is: 128,717.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,050.60 : 199,575.90 = 85,811.40 : x
  2. Step 2: Convert to fraction form
    133,050.60/199,575.90 = 85,811.40/x
  3. Step 3: Cross multiply
    133,050.60x = 199,575.90 × 85,811.40
  4. Step 4: Simplify right side
    133,050.60x = 17,125,887,385.26
  5. Step 5: Solve for x
    x = 17,125,887,385.26/133,050.60
  6. Step 6: Final answer
    x = 128,717.10

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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.