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Finding the Fourth Proportional to 120,600.90, 180,901.35 and 83,276.10

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Solution

The fourth proportional to 120,600.90, 180,901.35 and 83,276.10 is: 124,914.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,600.90 : 180,901.35 = 83,276.10 : x
  2. Step 2: Convert to fraction form
    120,600.90/180,901.35 = 83,276.10/x
  3. Step 3: Cross multiply
    120,600.90x = 180,901.35 × 83,276.10
  4. Step 4: Simplify right side
    120,600.90x = 15,064,758,912.74
  5. Step 5: Solve for x
    x = 15,064,758,912.74/120,600.90
  6. Step 6: Final answer
    x = 124,914.15

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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.