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Finding the Fourth Proportional to 120,525.60, 180,615.60 and 88,687.20

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Solution

The fourth proportional to 120,525.60, 180,615.60 and 88,687.20 is: 132,903.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,525.60 : 180,615.60 = 88,687.20 : x
  2. Step 2: Convert to fraction form
    120,525.60/180,615.60 = 88,687.20/x
  3. Step 3: Cross multiply
    120,525.60x = 180,615.60 × 88,687.20
  4. Step 4: Simplify right side
    120,525.60x = 16,018,291,840.32
  5. Step 5: Solve for x
    x = 16,018,291,840.32/120,525.60
  6. Step 6: Final answer
    x = 132,903.65

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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.