Home / 138,452.22-191,069.69-78,025.41

Finding the Fourth Proportional to 138,452.22, 191,069.69 and 78,025.41

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Solution

The fourth proportional to 138,452.22, 191,069.69 and 78,025.41 is: 107,678.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,452.22 : 191,069.69 = 78,025.41 : x
  2. Step 2: Convert to fraction form
    138,452.22/191,069.69 = 78,025.41/x
  3. Step 3: Cross multiply
    138,452.22x = 191,069.69 × 78,025.41
  4. Step 4: Simplify right side
    138,452.22x = 14,908,290,510.70
  5. Step 5: Solve for x
    x = 14,908,290,510.70/138,452.22
  6. Step 6: Final answer
    x = 107,678.23

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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.