Home / 138,895.12-191,675.28-75,232.72

Finding the Fourth Proportional to 138,895.12, 191,675.28 and 75,232.72

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Solution

The fourth proportional to 138,895.12, 191,675.28 and 75,232.72 is: 103,821.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,895.12 : 191,675.28 = 75,232.72 : x
  2. Step 2: Convert to fraction form
    138,895.12/191,675.28 = 75,232.72/x
  3. Step 3: Cross multiply
    138,895.12x = 191,675.28 × 75,232.72
  4. Step 4: Simplify right side
    138,895.12x = 14,420,252,671.16
  5. Step 5: Solve for x
    x = 14,420,252,671.16/138,895.12
  6. Step 6: Final answer
    x = 103,821.16

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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.