Home / 91,296.38-126,024.12-81,719.35

Finding the Fourth Proportional to 91,296.38, 126,024.12 and 81,719.35

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Solution

The fourth proportional to 91,296.38, 126,024.12 and 81,719.35 is: 112,804.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,296.38 : 126,024.12 = 81,719.35 : x
  2. Step 2: Convert to fraction form
    91,296.38/126,024.12 = 81,719.35/x
  3. Step 3: Cross multiply
    91,296.38x = 126,024.12 × 81,719.35
  4. Step 4: Simplify right side
    91,296.38x = 10,298,608,855.66
  5. Step 5: Solve for x
    x = 10,298,608,855.66/91,296.38
  6. Step 6: Final answer
    x = 112,804.13

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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.