Home / 140,320.64-193,642.56-76,659.20

Finding the Fourth Proportional to 140,320.64, 193,642.56 and 76,659.20

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Solution

The fourth proportional to 140,320.64, 193,642.56 and 76,659.20 is: 105,789.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,320.64 : 193,642.56 = 76,659.20 : x
  2. Step 2: Convert to fraction form
    140,320.64/193,642.56 = 76,659.20/x
  3. Step 3: Cross multiply
    140,320.64x = 193,642.56 × 76,659.20
  4. Step 4: Simplify right side
    140,320.64x = 14,844,483,735.55
  5. Step 5: Solve for x
    x = 14,844,483,735.55/140,320.64
  6. Step 6: Final answer
    x = 105,789.74

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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.