Home / 120,153.90-180,231-49,076.54

Finding the Fourth Proportional to 120,153.90, 180,231 and 49,076.54

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Solution

The fourth proportional to 120,153.90, 180,231 and 49,076.54 is: 73,614.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,153.90 : 180,231 = 49,076.54 : x
  2. Step 2: Convert to fraction form
    120,153.90/180,231 = 49,076.54/x
  3. Step 3: Cross multiply
    120,153.90x = 180,231 × 49,076.54
  4. Step 4: Simplify right side
    120,153.90x = 8,845,113,880.74
  5. Step 5: Solve for x
    x = 8,845,113,880.74/120,153.90
  6. Step 6: Final answer
    x = 73,614.87

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1.5x scale

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.