Home / 123,218.58-170,130.87-80,900.13

Finding the Fourth Proportional to 123,218.58, 170,130.87 and 80,900.13

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Solution

The fourth proportional to 123,218.58, 170,130.87 and 80,900.13 is: 111,700.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,218.58 : 170,130.87 = 80,900.13 : x
  2. Step 2: Convert to fraction form
    123,218.58/170,130.87 = 80,900.13/x
  3. Step 3: Cross multiply
    123,218.58x = 170,130.87 × 80,900.13
  4. Step 4: Simplify right side
    123,218.58x = 13,763,609,500.01
  5. Step 5: Solve for x
    x = 13,763,609,500.01/123,218.58
  6. Step 6: Final answer
    x = 111,700.76

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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.