Home / 140,305.78-193,614.93-76,631.86

Finding the Fourth Proportional to 140,305.78, 193,614.93 and 76,631.86

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Solution

The fourth proportional to 140,305.78, 193,614.93 and 76,631.86 is: 105,748.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,305.78 : 193,614.93 = 76,631.86 : x
  2. Step 2: Convert to fraction form
    140,305.78/193,614.93 = 76,631.86/x
  3. Step 3: Cross multiply
    140,305.78x = 193,614.93 × 76,631.86
  4. Step 4: Simplify right side
    140,305.78x = 14,837,072,209.67
  5. Step 5: Solve for x
    x = 14,837,072,209.67/140,305.78
  6. Step 6: Final answer
    x = 105,748.12

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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.