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Finding the Fourth Proportional to 170,077.20, 255,115.80 and 146,749.20

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Solution

The fourth proportional to 170,077.20, 255,115.80 and 146,749.20 is: 220,123.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,077.20 : 255,115.80 = 146,749.20 : x
  2. Step 2: Convert to fraction form
    170,077.20/255,115.80 = 146,749.20/x
  3. Step 3: Cross multiply
    170,077.20x = 255,115.80 × 146,749.20
  4. Step 4: Simplify right side
    170,077.20x = 37,438,039,557.36
  5. Step 5: Solve for x
    x = 37,438,039,557.36/170,077.20
  6. Step 6: Final answer
    x = 220,123.80

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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.