Home / 148,141.28-204,434.30-80,159.45

Finding the Fourth Proportional to 148,141.28, 204,434.30 and 80,159.45

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Solution

The fourth proportional to 148,141.28, 204,434.30 and 80,159.45 is: 110,619.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,141.28 : 204,434.30 = 80,159.45 : x
  2. Step 2: Convert to fraction form
    148,141.28/204,434.30 = 80,159.45/x
  3. Step 3: Cross multiply
    148,141.28x = 204,434.30 × 80,159.45
  4. Step 4: Simplify right side
    148,141.28x = 16,387,341,760.62
  5. Step 5: Solve for x
    x = 16,387,341,760.62/148,141.28
  6. Step 6: Final answer
    x = 110,619.69

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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.