Home / 140,569.86-193,986.18-76,907.91

Finding the Fourth Proportional to 140,569.86, 193,986.18 and 76,907.91

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Solution

The fourth proportional to 140,569.86, 193,986.18 and 76,907.91 is: 106,132.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,569.86 : 193,986.18 = 76,907.91 : x
  2. Step 2: Convert to fraction form
    140,569.86/193,986.18 = 76,907.91/x
  3. Step 3: Cross multiply
    140,569.86x = 193,986.18 × 76,907.91
  4. Step 4: Simplify right side
    140,569.86x = 14,919,071,672.68
  5. Step 5: Solve for x
    x = 14,919,071,672.68/140,569.86
  6. Step 6: Final answer
    x = 106,132.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.