Home / 92,128.20-127,125.60-58,123.86

Finding the Fourth Proportional to 92,128.20, 127,125.60 and 58,123.86

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Solution

The fourth proportional to 92,128.20, 127,125.60 and 58,123.86 is: 80,203.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,128.20 : 127,125.60 = 58,123.86 : x
  2. Step 2: Convert to fraction form
    92,128.20/127,125.60 = 58,123.86/x
  3. Step 3: Cross multiply
    92,128.20x = 127,125.60 × 58,123.86
  4. Step 4: Simplify right side
    92,128.20x = 7,389,030,576.82
  5. Step 5: Solve for x
    x = 7,389,030,576.82/92,128.20
  6. Step 6: Final answer
    x = 80,203.79

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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.