Home / 120,655.49-166,509.02-72,899.61

Finding the Fourth Proportional to 120,655.49, 166,509.02 and 72,899.61

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Solution

The fourth proportional to 120,655.49, 166,509.02 and 72,899.61 is: 100,604.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,655.49 : 166,509.02 = 72,899.61 : x
  2. Step 2: Convert to fraction form
    120,655.49/166,509.02 = 72,899.61/x
  3. Step 3: Cross multiply
    120,655.49x = 166,509.02 × 72,899.61
  4. Step 4: Simplify right side
    120,655.49x = 12,138,442,619.48
  5. Step 5: Solve for x
    x = 12,138,442,619.48/120,655.49
  6. Step 6: Final answer
    x = 100,604.15

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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.