Home / 120,538.64-180,574.68-92,700.56

Finding the Fourth Proportional to 120,538.64, 180,574.68 and 92,700.56

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Solution

The fourth proportional to 120,538.64, 180,574.68 and 92,700.56 is: 138,871.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,538.64 : 180,574.68 = 92,700.56 : x
  2. Step 2: Convert to fraction form
    120,538.64/180,574.68 = 92,700.56/x
  3. Step 3: Cross multiply
    120,538.64x = 180,574.68 × 92,700.56
  4. Step 4: Simplify right side
    120,538.64x = 16,739,373,957.82
  5. Step 5: Solve for x
    x = 16,739,373,957.82/120,538.64
  6. Step 6: Final answer
    x = 138,871.44

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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.