Home / 161,979.21-223,531.65-90,357.39

Finding the Fourth Proportional to 161,979.21, 223,531.65 and 90,357.39

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Solution

The fourth proportional to 161,979.21, 223,531.65 and 90,357.39 is: 124,693.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,979.21 : 223,531.65 = 90,357.39 : x
  2. Step 2: Convert to fraction form
    161,979.21/223,531.65 = 90,357.39/x
  3. Step 3: Cross multiply
    161,979.21x = 223,531.65 × 90,357.39
  4. Step 4: Simplify right side
    161,979.21x = 20,197,736,476.39
  5. Step 5: Solve for x
    x = 20,197,736,476.39/161,979.21
  6. Step 6: Final answer
    x = 124,693.39

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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.