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Finding the Fourth Proportional to 140,499, 193,911.51 and 104,439.93

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Solution

The fourth proportional to 140,499, 193,911.51 and 104,439.93 is: 144,144.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,499 : 193,911.51 = 104,439.93 : x
  2. Step 2: Convert to fraction form
    140,499/193,911.51 = 104,439.93/x
  3. Step 3: Cross multiply
    140,499x = 193,911.51 × 104,439.93
  4. Step 4: Simplify right side
    140,499x = 20,252,104,530.59
  5. Step 5: Solve for x
    x = 20,252,104,530.59/140,499
  6. Step 6: Final answer
    x = 144,144.12

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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.