Home / 149,012.36-206,178.56-129,931.89

Finding the Fourth Proportional to 149,012.36, 206,178.56 and 129,931.89

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Solution

The fourth proportional to 149,012.36, 206,178.56 and 129,931.89 is: 179,778.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,012.36 : 206,178.56 = 129,931.89 : x
  2. Step 2: Convert to fraction form
    149,012.36/206,178.56 = 129,931.89/x
  3. Step 3: Cross multiply
    149,012.36x = 206,178.56 × 129,931.89
  4. Step 4: Simplify right side
    149,012.36x = 26,789,169,328.62
  5. Step 5: Solve for x
    x = 26,789,169,328.62/149,012.36
  6. Step 6: Final answer
    x = 179,778.18

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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.