Home / 121,405.23-182,124.47-41,421.75

Finding the Fourth Proportional to 121,405.23, 182,124.47 and 41,421.75

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Solution

The fourth proportional to 121,405.23, 182,124.47 and 41,421.75 is: 62,138.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,405.23 : 182,124.47 = 41,421.75 : x
  2. Step 2: Convert to fraction form
    121,405.23/182,124.47 = 41,421.75/x
  3. Step 3: Cross multiply
    121,405.23x = 182,124.47 × 41,421.75
  4. Step 4: Simplify right side
    121,405.23x = 7,543,914,058.11
  5. Step 5: Solve for x
    x = 7,543,914,058.11/121,405.23
  6. Step 6: Final answer
    x = 62,138.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.