Home / 120,292.64-180,457.18-87,261.95

Finding the Fourth Proportional to 120,292.64, 180,457.18 and 87,261.95

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Solution

The fourth proportional to 120,292.64, 180,457.18 and 87,261.95 is: 130,906.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,292.64 : 180,457.18 = 87,261.95 : x
  2. Step 2: Convert to fraction form
    120,292.64/180,457.18 = 87,261.95/x
  3. Step 3: Cross multiply
    120,292.64x = 180,457.18 × 87,261.95
  4. Step 4: Simplify right side
    120,292.64x = 15,747,045,418.30
  5. Step 5: Solve for x
    x = 15,747,045,418.30/120,292.64
  6. Step 6: Final answer
    x = 130,906.14

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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.