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Finding the Fourth Proportional to 92,791.86, 128,174.85 and 71,150.28

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Solution

The fourth proportional to 92,791.86, 128,174.85 and 71,150.28 is: 98,281.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,791.86 : 128,174.85 = 71,150.28 : x
  2. Step 2: Convert to fraction form
    92,791.86/128,174.85 = 71,150.28/x
  3. Step 3: Cross multiply
    92,791.86x = 128,174.85 × 71,150.28
  4. Step 4: Simplify right side
    92,791.86x = 9,119,676,466.46
  5. Step 5: Solve for x
    x = 9,119,676,466.46/92,791.86
  6. Step 6: Final answer
    x = 98,281.00

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1.5x scale

Why These Related Problems?

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