Home / 136,872.30-205,242.84-70,278.15

Finding the Fourth Proportional to 136,872.30, 205,242.84 and 70,278.15

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Solution

The fourth proportional to 136,872.30, 205,242.84 and 70,278.15 is: 105,383.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,872.30 : 205,242.84 = 70,278.15 : x
  2. Step 2: Convert to fraction form
    136,872.30/205,242.84 = 70,278.15/x
  3. Step 3: Cross multiply
    136,872.30x = 205,242.84 × 70,278.15
  4. Step 4: Simplify right side
    136,872.30x = 14,424,087,095.95
  5. Step 5: Solve for x
    x = 14,424,087,095.95/136,872.30
  6. Step 6: Final answer
    x = 105,383.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.