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Finding the Fourth Proportional to 170,139.86, 255,246.69 and 51,808.10

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Solution

The fourth proportional to 170,139.86, 255,246.69 and 51,808.10 is: 77,723.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,139.86 : 255,246.69 = 51,808.10 : x
  2. Step 2: Convert to fraction form
    170,139.86/255,246.69 = 51,808.10/x
  3. Step 3: Cross multiply
    170,139.86x = 255,246.69 × 51,808.10
  4. Step 4: Simplify right side
    170,139.86x = 13,223,846,040.19
  5. Step 5: Solve for x
    x = 13,223,846,040.19/170,139.86
  6. Step 6: Final answer
    x = 77,723.39

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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.