Home / 140,117.12-193,359.04-76,453.28

Finding the Fourth Proportional to 140,117.12, 193,359.04 and 76,453.28

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Solution

The fourth proportional to 140,117.12, 193,359.04 and 76,453.28 is: 105,504.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,117.12 : 193,359.04 = 76,453.28 : x
  2. Step 2: Convert to fraction form
    140,117.12/193,359.04 = 76,453.28/x
  3. Step 3: Cross multiply
    140,117.12x = 193,359.04 × 76,453.28
  4. Step 4: Simplify right side
    140,117.12x = 14,782,932,825.65
  5. Step 5: Solve for x
    x = 14,782,932,825.65/140,117.12
  6. Step 6: Final answer
    x = 105,504.12

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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.