Home / 123,320.48-170,183.04-66,731.76

Finding the Fourth Proportional to 123,320.48, 170,183.04 and 66,731.76

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Solution

The fourth proportional to 123,320.48, 170,183.04 and 66,731.76 is: 92,090.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,320.48 : 170,183.04 = 66,731.76 : x
  2. Step 2: Convert to fraction form
    123,320.48/170,183.04 = 66,731.76/x
  3. Step 3: Cross multiply
    123,320.48x = 170,183.04 × 66,731.76
  4. Step 4: Simplify right side
    123,320.48x = 11,356,613,781.35
  5. Step 5: Solve for x
    x = 11,356,613,781.35/123,320.48
  6. Step 6: Final answer
    x = 92,090.25

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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.