Home / 146,785.60-220,178.40-91,412.80

Finding the Fourth Proportional to 146,785.60, 220,178.40 and 91,412.80

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Solution

The fourth proportional to 146,785.60, 220,178.40 and 91,412.80 is: 137,119.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,785.60 : 220,178.40 = 91,412.80 : x
  2. Step 2: Convert to fraction form
    146,785.60/220,178.40 = 91,412.80/x
  3. Step 3: Cross multiply
    146,785.60x = 220,178.40 × 91,412.80
  4. Step 4: Simplify right side
    146,785.60x = 20,127,124,043.52
  5. Step 5: Solve for x
    x = 20,127,124,043.52/146,785.60
  6. Step 6: Final answer
    x = 137,119.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.