Home / 123,221.02-170,062.03-72,246.30

Finding the Fourth Proportional to 123,221.02, 170,062.03 and 72,246.30

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Solution

The fourth proportional to 123,221.02, 170,062.03 and 72,246.30 is: 99,709.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,221.02 : 170,062.03 = 72,246.30 : x
  2. Step 2: Convert to fraction form
    123,221.02/170,062.03 = 72,246.30/x
  3. Step 3: Cross multiply
    123,221.02x = 170,062.03 × 72,246.30
  4. Step 4: Simplify right side
    123,221.02x = 12,286,353,166.03
  5. Step 5: Solve for x
    x = 12,286,353,166.03/123,221.02
  6. Step 6: Final answer
    x = 99,709.88

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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.