Home / 120,018.78-180,005.90-44,100.72

Finding the Fourth Proportional to 120,018.78, 180,005.90 and 44,100.72

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Solution

The fourth proportional to 120,018.78, 180,005.90 and 44,100.72 is: 66,142.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,018.78 : 180,005.90 = 44,100.72 : x
  2. Step 2: Convert to fraction form
    120,018.78/180,005.90 = 44,100.72/x
  3. Step 3: Cross multiply
    120,018.78x = 180,005.90 × 44,100.72
  4. Step 4: Simplify right side
    120,018.78x = 7,938,389,573.74
  5. Step 5: Solve for x
    x = 7,938,389,573.74/120,018.78
  6. Step 6: Final answer
    x = 66,142.90

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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.