Home / 239,120.60-329,973.78-137,140.80

Finding the Fourth Proportional to 239,120.60, 329,973.78 and 137,140.80

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Solution

The fourth proportional to 239,120.60, 329,973.78 and 137,140.80 is: 189,247.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,120.60 : 329,973.78 = 137,140.80 : x
  2. Step 2: Convert to fraction form
    239,120.60/329,973.78 = 137,140.80/x
  3. Step 3: Cross multiply
    239,120.60x = 329,973.78 × 137,140.80
  4. Step 4: Simplify right side
    239,120.60x = 45,252,868,168.22
  5. Step 5: Solve for x
    x = 45,252,868,168.22/239,120.60
  6. Step 6: Final answer
    x = 189,247.05

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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.