Home / 120,572.17-180,895.61-87,304.25

Finding the Fourth Proportional to 120,572.17, 180,895.61 and 87,304.25

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Solution

The fourth proportional to 120,572.17, 180,895.61 and 87,304.25 is: 130,983.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,572.17 : 180,895.61 = 87,304.25 : x
  2. Step 2: Convert to fraction form
    120,572.17/180,895.61 = 87,304.25/x
  3. Step 3: Cross multiply
    120,572.17x = 180,895.61 × 87,304.25
  4. Step 4: Simplify right side
    120,572.17x = 15,792,956,229.84
  5. Step 5: Solve for x
    x = 15,792,956,229.84/120,572.17
  6. Step 6: Final answer
    x = 130,983.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.