Home / 121,778.60-168,049.18-66,586.91

Finding the Fourth Proportional to 121,778.60, 168,049.18 and 66,586.91

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Solution

The fourth proportional to 121,778.60, 168,049.18 and 66,586.91 is: 91,887.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,778.60 : 168,049.18 = 66,586.91 : x
  2. Step 2: Convert to fraction form
    121,778.60/168,049.18 = 66,586.91/x
  3. Step 3: Cross multiply
    121,778.60x = 168,049.18 × 66,586.91
  4. Step 4: Simplify right side
    121,778.60x = 11,189,875,624.23
  5. Step 5: Solve for x
    x = 11,189,875,624.23/121,778.60
  6. Step 6: Final answer
    x = 91,887.04

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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.