Home / 144,905.40-217,285.20-85,759.20

Finding the Fourth Proportional to 144,905.40, 217,285.20 and 85,759.20

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Solution

The fourth proportional to 144,905.40, 217,285.20 and 85,759.20 is: 128,595.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,905.40 : 217,285.20 = 85,759.20 : x
  2. Step 2: Convert to fraction form
    144,905.40/217,285.20 = 85,759.20/x
  3. Step 3: Cross multiply
    144,905.40x = 217,285.20 × 85,759.20
  4. Step 4: Simplify right side
    144,905.40x = 18,634,204,923.84
  5. Step 5: Solve for x
    x = 18,634,204,923.84/144,905.40
  6. Step 6: Final answer
    x = 128,595.66

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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.