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Finding the Fourth Proportional to 170,101.66, 255,143.10 and 51,763.76

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Solution

The fourth proportional to 170,101.66, 255,143.10 and 51,763.76 is: 77,642.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,101.66 : 255,143.10 = 51,763.76 : x
  2. Step 2: Convert to fraction form
    170,101.66/255,143.10 = 51,763.76/x
  3. Step 3: Cross multiply
    170,101.66x = 255,143.10 × 51,763.76
  4. Step 4: Simplify right side
    170,101.66x = 13,207,166,194.06
  5. Step 5: Solve for x
    x = 13,207,166,194.06/170,101.66
  6. Step 6: Final answer
    x = 77,642.78

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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.