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Finding the Fourth Proportional to 170,991.60, 256,472.20 and 76,226.46

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Solution

The fourth proportional to 170,991.60, 256,472.20 and 76,226.46 is: 114,332.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,991.60 : 256,472.20 = 76,226.46 : x
  2. Step 2: Convert to fraction form
    170,991.60/256,472.20 = 76,226.46/x
  3. Step 3: Cross multiply
    170,991.60x = 256,472.20 × 76,226.46
  4. Step 4: Simplify right side
    170,991.60x = 19,549,967,894.41
  5. Step 5: Solve for x
    x = 19,549,967,894.41/170,991.60
  6. Step 6: Final answer
    x = 114,332.91

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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.