Home / 218,724.72-301,839.12-121,927.29

Finding the Fourth Proportional to 218,724.72, 301,839.12 and 121,927.29

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Solution

The fourth proportional to 218,724.72, 301,839.12 and 121,927.29 is: 168,259.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,724.72 : 301,839.12 = 121,927.29 : x
  2. Step 2: Convert to fraction form
    218,724.72/301,839.12 = 121,927.29/x
  3. Step 3: Cross multiply
    218,724.72x = 301,839.12 × 121,927.29
  4. Step 4: Simplify right side
    218,724.72x = 36,802,425,917.58
  5. Step 5: Solve for x
    x = 36,802,425,917.58/218,724.72
  6. Step 6: Final answer
    x = 168,259.11

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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.