Home / 92,719.08-127,839.60-78,352.92

Finding the Fourth Proportional to 92,719.08, 127,839.60 and 78,352.92

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Solution

The fourth proportional to 92,719.08, 127,839.60 and 78,352.92 is: 108,031.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,719.08 : 127,839.60 = 78,352.92 : x
  2. Step 2: Convert to fraction form
    92,719.08/127,839.60 = 78,352.92/x
  3. Step 3: Cross multiply
    92,719.08x = 127,839.60 × 78,352.92
  4. Step 4: Simplify right side
    92,719.08x = 10,016,605,951.63
  5. Step 5: Solve for x
    x = 10,016,605,951.63/92,719.08
  6. Step 6: Final answer
    x = 108,031.77

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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.