Home / 123,254.10-170,090.66-66,665.48

Finding the Fourth Proportional to 123,254.10, 170,090.66 and 66,665.48

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Solution

The fourth proportional to 123,254.10, 170,090.66 and 66,665.48 is: 91,998.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,254.10 : 170,090.66 = 66,665.48 : x
  2. Step 2: Convert to fraction form
    123,254.10/170,090.66 = 66,665.48/x
  3. Step 3: Cross multiply
    123,254.10x = 170,090.66 × 66,665.48
  4. Step 4: Simplify right side
    123,254.10x = 11,339,174,308.64
  5. Step 5: Solve for x
    x = 11,339,174,308.64/123,254.10
  6. Step 6: Final answer
    x = 91,998.35

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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.