Home / 222,109.12-306,515.28-121,507.12

Finding the Fourth Proportional to 222,109.12, 306,515.28 and 121,507.12

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Solution

The fourth proportional to 222,109.12, 306,515.28 and 121,507.12 is: 167,682.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,109.12 : 306,515.28 = 121,507.12 : x
  2. Step 2: Convert to fraction form
    222,109.12/306,515.28 = 121,507.12/x
  3. Step 3: Cross multiply
    222,109.12x = 306,515.28 × 121,507.12
  4. Step 4: Simplify right side
    222,109.12x = 37,243,788,908.79
  5. Step 5: Solve for x
    x = 37,243,788,908.79/222,109.12
  6. Step 6: Final answer
    x = 167,682.39

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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.