Home / 136,921.60-189,081.08-129,466.60

Finding the Fourth Proportional to 136,921.60, 189,081.08 and 129,466.60

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Solution

The fourth proportional to 136,921.60, 189,081.08 and 129,466.60 is: 178,786.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,921.60 : 189,081.08 = 129,466.60 : x
  2. Step 2: Convert to fraction form
    136,921.60/189,081.08 = 129,466.60/x
  3. Step 3: Cross multiply
    136,921.60x = 189,081.08 × 129,466.60
  4. Step 4: Simplify right side
    136,921.60x = 24,479,684,551.93
  5. Step 5: Solve for x
    x = 24,479,684,551.93/136,921.60
  6. Step 6: Final answer
    x = 178,786.14

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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.