Home / 144,960.20-217,440.30-85,765.40

Finding the Fourth Proportional to 144,960.20, 217,440.30 and 85,765.40

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Solution

The fourth proportional to 144,960.20, 217,440.30 and 85,765.40 is: 128,648.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,960.20 : 217,440.30 = 85,765.40 : x
  2. Step 2: Convert to fraction form
    144,960.20/217,440.30 = 85,765.40/x
  3. Step 3: Cross multiply
    144,960.20x = 217,440.30 × 85,765.40
  4. Step 4: Simplify right side
    144,960.20x = 18,648,854,305.62
  5. Step 5: Solve for x
    x = 18,648,854,305.62/144,960.20
  6. Step 6: Final answer
    x = 128,648.10

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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.