Home / 140,530.64-193,928.16-76,867.06

Finding the Fourth Proportional to 140,530.64, 193,928.16 and 76,867.06

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Solution

The fourth proportional to 140,530.64, 193,928.16 and 76,867.06 is: 106,074.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,530.64 : 193,928.16 = 76,867.06 : x
  2. Step 2: Convert to fraction form
    140,530.64/193,928.16 = 76,867.06/x
  3. Step 3: Cross multiply
    140,530.64x = 193,928.16 × 76,867.06
  4. Step 4: Simplify right side
    140,530.64x = 14,906,687,510.41
  5. Step 5: Solve for x
    x = 14,906,687,510.41/140,530.64
  6. Step 6: Final answer
    x = 106,074.29

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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.