Home / 121,256.98-181,938.39-42,427.78

Finding the Fourth Proportional to 121,256.98, 181,938.39 and 42,427.78

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Solution

The fourth proportional to 121,256.98, 181,938.39 and 42,427.78 is: 63,660.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,256.98 : 181,938.39 = 42,427.78 : x
  2. Step 2: Convert to fraction form
    121,256.98/181,938.39 = 42,427.78/x
  3. Step 3: Cross multiply
    121,256.98x = 181,938.39 × 42,427.78
  4. Step 4: Simplify right side
    121,256.98x = 7,719,241,984.47
  5. Step 5: Solve for x
    x = 7,719,241,984.47/121,256.98
  6. Step 6: Final answer
    x = 63,660.19

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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.