Home / 170,420.20-255,630.30-99,269.80

Finding the Fourth Proportional to 170,420.20, 255,630.30 and 99,269.80

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Solution

The fourth proportional to 170,420.20, 255,630.30 and 99,269.80 is: 148,904.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,420.20 : 255,630.30 = 99,269.80 : x
  2. Step 2: Convert to fraction form
    170,420.20/255,630.30 = 99,269.80/x
  3. Step 3: Cross multiply
    170,420.20x = 255,630.30 × 99,269.80
  4. Step 4: Simplify right side
    170,420.20x = 25,376,368,754.94
  5. Step 5: Solve for x
    x = 25,376,368,754.94/170,420.20
  6. Step 6: Final answer
    x = 148,904.70

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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.