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Finding the Fourth Proportional to 191,700.48, 287,334.72 and 85,104.48

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Solution

The fourth proportional to 191,700.48, 287,334.72 and 85,104.48 is: 127,560.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,700.48 : 287,334.72 = 85,104.48 : x
  2. Step 2: Convert to fraction form
    191,700.48/287,334.72 = 85,104.48/x
  3. Step 3: Cross multiply
    191,700.48x = 287,334.72 × 85,104.48
  4. Step 4: Simplify right side
    191,700.48x = 24,453,471,931.55
  5. Step 5: Solve for x
    x = 24,453,471,931.55/191,700.48
  6. Step 6: Final answer
    x = 127,560.83

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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.