Home / 100,194.17-138,268.16-54,254.31

Finding the Fourth Proportional to 100,194.17, 138,268.16 and 54,254.31

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Solution

The fourth proportional to 100,194.17, 138,268.16 and 54,254.31 is: 74,871.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,194.17 : 138,268.16 = 54,254.31 : x
  2. Step 2: Convert to fraction form
    100,194.17/138,268.16 = 54,254.31/x
  3. Step 3: Cross multiply
    100,194.17x = 138,268.16 × 54,254.31
  4. Step 4: Simplify right side
    100,194.17x = 7,501,643,807.20
  5. Step 5: Solve for x
    x = 7,501,643,807.20/100,194.17
  6. Step 6: Final answer
    x = 74,871.06

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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.