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Finding the Fourth Proportional to 140,202.79, 193,490.89 and 79,775.98

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Solution

The fourth proportional to 140,202.79, 193,490.89 and 79,775.98 is: 110,097.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,202.79 : 193,490.89 = 79,775.98 : x
  2. Step 2: Convert to fraction form
    140,202.79/193,490.89 = 79,775.98/x
  3. Step 3: Cross multiply
    140,202.79x = 193,490.89 × 79,775.98
  4. Step 4: Simplify right side
    140,202.79x = 15,435,925,370.82
  5. Step 5: Solve for x
    x = 15,435,925,370.82/140,202.79
  6. Step 6: Final answer
    x = 110,097.13

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1.5x scale

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.