Home / 239,705.40-330,809.63-137,764.20

Finding the Fourth Proportional to 239,705.40, 330,809.63 and 137,764.20

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Solution

The fourth proportional to 239,705.40, 330,809.63 and 137,764.20 is: 190,123.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,705.40 : 330,809.63 = 137,764.20 : x
  2. Step 2: Convert to fraction form
    239,705.40/330,809.63 = 137,764.20/x
  3. Step 3: Cross multiply
    239,705.40x = 330,809.63 × 137,764.20
  4. Step 4: Simplify right side
    239,705.40x = 45,573,723,340.43
  5. Step 5: Solve for x
    x = 45,573,723,340.43/239,705.40
  6. Step 6: Final answer
    x = 190,123.89

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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.