Home / 121,291.40-181,937.10-38,185.40

Finding the Fourth Proportional to 121,291.40, 181,937.10 and 38,185.40

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Solution

The fourth proportional to 121,291.40, 181,937.10 and 38,185.40 is: 57,278.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,291.40 : 181,937.10 = 38,185.40 : x
  2. Step 2: Convert to fraction form
    121,291.40/181,937.10 = 38,185.40/x
  3. Step 3: Cross multiply
    121,291.40x = 181,937.10 × 38,185.40
  4. Step 4: Simplify right side
    121,291.40x = 6,947,340,938.34
  5. Step 5: Solve for x
    x = 6,947,340,938.34/121,291.40
  6. Step 6: Final answer
    x = 57,278.10

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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.