Home / 78,278.15-117,399.79-22,123.51

Finding the Fourth Proportional to 78,278.15, 117,399.79 and 22,123.51

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Solution

The fourth proportional to 78,278.15, 117,399.79 and 22,123.51 is: 33,180.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,278.15 : 117,399.79 = 22,123.51 : x
  2. Step 2: Convert to fraction form
    78,278.15/117,399.79 = 22,123.51/x
  3. Step 3: Cross multiply
    78,278.15x = 117,399.79 × 22,123.51
  4. Step 4: Simplify right side
    78,278.15x = 2,597,295,428.06
  5. Step 5: Solve for x
    x = 2,597,295,428.06/78,278.15
  6. Step 6: Final answer
    x = 33,180.34

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1.5x scale

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.