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Finding the Fourth Proportional to 120,627.40, 180,941.10 and 101,090.20

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Solution

The fourth proportional to 120,627.40, 180,941.10 and 101,090.20 is: 151,635.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,627.40 : 180,941.10 = 101,090.20 : x
  2. Step 2: Convert to fraction form
    120,627.40/180,941.10 = 101,090.20/x
  3. Step 3: Cross multiply
    120,627.40x = 180,941.10 × 101,090.20
  4. Step 4: Simplify right side
    120,627.40x = 18,291,371,987.22
  5. Step 5: Solve for x
    x = 18,291,371,987.22/120,627.40
  6. Step 6: Final answer
    x = 151,635.30

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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.