Home / 215,749.02-297,735.12-120,261.72

Finding the Fourth Proportional to 215,749.02, 297,735.12 and 120,261.72

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Solution

The fourth proportional to 215,749.02, 297,735.12 and 120,261.72 is: 165,961.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,749.02 : 297,735.12 = 120,261.72 : x
  2. Step 2: Convert to fraction form
    215,749.02/297,735.12 = 120,261.72/x
  3. Step 3: Cross multiply
    215,749.02x = 297,735.12 × 120,261.72
  4. Step 4: Simplify right side
    215,749.02x = 35,806,137,635.61
  5. Step 5: Solve for x
    x = 35,806,137,635.61/215,749.02
  6. Step 6: Final answer
    x = 165,961.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.