Home / 217,327.47-299,926.31-121,840.35

Finding the Fourth Proportional to 217,327.47, 299,926.31 and 121,840.35

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Solution

The fourth proportional to 217,327.47, 299,926.31 and 121,840.35 is: 168,147.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,327.47 : 299,926.31 = 121,840.35 : x
  2. Step 2: Convert to fraction form
    217,327.47/299,926.31 = 121,840.35/x
  3. Step 3: Cross multiply
    217,327.47x = 299,926.31 × 121,840.35
  4. Step 4: Simplify right side
    217,327.47x = 36,543,125,975.41
  5. Step 5: Solve for x
    x = 36,543,125,975.41/217,327.47
  6. Step 6: Final answer
    x = 168,147.75

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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.