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Finding the Fourth Proportional to 170,345.79, 255,575.56 and 75,562.90

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Solution

The fourth proportional to 170,345.79, 255,575.56 and 75,562.90 is: 113,369.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,345.79 : 255,575.56 = 75,562.90 : x
  2. Step 2: Convert to fraction form
    170,345.79/255,575.56 = 75,562.90/x
  3. Step 3: Cross multiply
    170,345.79x = 255,575.56 × 75,562.90
  4. Step 4: Simplify right side
    170,345.79x = 19,312,030,754.97
  5. Step 5: Solve for x
    x = 19,312,030,754.97/170,345.79
  6. Step 6: Final answer
    x = 113,369.58

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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.