Home / 138,450.03-191,061.15-74,787.84

Finding the Fourth Proportional to 138,450.03, 191,061.15 and 74,787.84

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Solution

The fourth proportional to 138,450.03, 191,061.15 and 74,787.84 is: 103,207.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,450.03 : 191,061.15 = 74,787.84 : x
  2. Step 2: Convert to fraction form
    138,450.03/191,061.15 = 74,787.84/x
  3. Step 3: Cross multiply
    138,450.03x = 191,061.15 × 74,787.84
  4. Step 4: Simplify right side
    138,450.03x = 14,289,049,761.11
  5. Step 5: Solve for x
    x = 14,289,049,761.11/138,450.03
  6. Step 6: Final answer
    x = 103,207.27

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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.