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Finding the Fourth Proportional to 170,242.68, 255,405.38 and 51,916.12

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Solution

The fourth proportional to 170,242.68, 255,405.38 and 51,916.12 is: 77,886.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,242.68 : 255,405.38 = 51,916.12 : x
  2. Step 2: Convert to fraction form
    170,242.68/255,405.38 = 51,916.12/x
  3. Step 3: Cross multiply
    170,242.68x = 255,405.38 × 51,916.12
  4. Step 4: Simplify right side
    170,242.68x = 13,259,656,356.73
  5. Step 5: Solve for x
    x = 13,259,656,356.73/170,242.68
  6. Step 6: Final answer
    x = 77,886.79

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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.