Home / 91,275.72-126,046.68-86,305.74

Finding the Fourth Proportional to 91,275.72, 126,046.68 and 86,305.74

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Solution

The fourth proportional to 91,275.72, 126,046.68 and 86,305.74 is: 119,183.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,275.72 : 126,046.68 = 86,305.74 : x
  2. Step 2: Convert to fraction form
    91,275.72/126,046.68 = 86,305.74/x
  3. Step 3: Cross multiply
    91,275.72x = 126,046.68 × 86,305.74
  4. Step 4: Simplify right side
    91,275.72x = 10,878,551,991.94
  5. Step 5: Solve for x
    x = 10,878,551,991.94/91,275.72
  6. Step 6: Final answer
    x = 119,183.41

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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.