Home / 138,569.50-191,226.19-74,907.29

Finding the Fourth Proportional to 138,569.50, 191,226.19 and 74,907.29

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Solution

The fourth proportional to 138,569.50, 191,226.19 and 74,907.29 is: 103,372.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,569.50 : 191,226.19 = 74,907.29 : x
  2. Step 2: Convert to fraction form
    138,569.50/191,226.19 = 74,907.29/x
  3. Step 3: Cross multiply
    138,569.50x = 191,226.19 × 74,907.29
  4. Step 4: Simplify right side
    138,569.50x = 14,324,235,669.93
  5. Step 5: Solve for x
    x = 14,324,235,669.93/138,569.50
  6. Step 6: Final answer
    x = 103,372.21

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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.