Home / 140,945.76-194,509.08-77,287.86

Finding the Fourth Proportional to 140,945.76, 194,509.08 and 77,287.86

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Solution

The fourth proportional to 140,945.76, 194,509.08 and 77,287.86 is: 106,659.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,945.76 : 194,509.08 = 77,287.86 : x
  2. Step 2: Convert to fraction form
    140,945.76/194,509.08 = 77,287.86/x
  3. Step 3: Cross multiply
    140,945.76x = 194,509.08 × 77,287.86
  4. Step 4: Simplify right side
    140,945.76x = 15,033,190,543.77
  5. Step 5: Solve for x
    x = 15,033,190,543.77/140,945.76
  6. Step 6: Final answer
    x = 106,659.40

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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.