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Finding the Fourth Proportional to 170,990.60, 256,470.71 and 76,225.46

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Solution

The fourth proportional to 170,990.60, 256,470.71 and 76,225.46 is: 114,331.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,990.60 : 256,470.71 = 76,225.46 : x
  2. Step 2: Convert to fraction form
    170,990.60/256,470.71 = 76,225.46/x
  3. Step 3: Cross multiply
    170,990.60x = 256,470.71 × 76,225.46
  4. Step 4: Simplify right side
    170,990.60x = 19,549,596,182.80
  5. Step 5: Solve for x
    x = 19,549,596,182.80/170,990.60
  6. Step 6: Final answer
    x = 114,331.41

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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.