Home / 170,990.61-256,490.27-81,012.24

Finding the Fourth Proportional to 170,990.61, 256,490.27 and 81,012.24

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Solution

The fourth proportional to 170,990.61, 256,490.27 and 81,012.24 is: 121,520.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,990.61 : 256,490.27 = 81,012.24 : x
  2. Step 2: Convert to fraction form
    170,990.61/256,490.27 = 81,012.24/x
  3. Step 3: Cross multiply
    170,990.61x = 256,490.27 × 81,012.24
  4. Step 4: Simplify right side
    170,990.61x = 20,778,850,905.84
  5. Step 5: Solve for x
    x = 20,778,850,905.84/170,990.61
  6. Step 6: Final answer
    x = 121,520.42

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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.