Home / 140,795.12-194,295-77,133.20

Finding the Fourth Proportional to 140,795.12, 194,295 and 77,133.20

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Solution

The fourth proportional to 140,795.12, 194,295 and 77,133.20 is: 106,442.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,795.12 : 194,295 = 77,133.20 : x
  2. Step 2: Convert to fraction form
    140,795.12/194,295 = 77,133.20/x
  3. Step 3: Cross multiply
    140,795.12x = 194,295 × 77,133.20
  4. Step 4: Simplify right side
    140,795.12x = 14,986,595,094
  5. Step 5: Solve for x
    x = 14,986,595,094/140,795.12
  6. Step 6: Final answer
    x = 106,442.57

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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.