Home / 137,223.65-189,388.56-79,069.07

Finding the Fourth Proportional to 137,223.65, 189,388.56 and 79,069.07

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Solution

The fourth proportional to 137,223.65, 189,388.56 and 79,069.07 is: 109,126.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,223.65 : 189,388.56 = 79,069.07 : x
  2. Step 2: Convert to fraction form
    137,223.65/189,388.56 = 79,069.07/x
  3. Step 3: Cross multiply
    137,223.65x = 189,388.56 × 79,069.07
  4. Step 4: Simplify right side
    137,223.65x = 14,974,776,360.90
  5. Step 5: Solve for x
    x = 14,974,776,360.90/137,223.65
  6. Step 6: Final answer
    x = 109,126.79

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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.