Home / 78,120.17-117,186.34-25,534.97

Finding the Fourth Proportional to 78,120.17, 117,186.34 and 25,534.97

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Solution

The fourth proportional to 78,120.17, 117,186.34 and 25,534.97 is: 38,304.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,120.17 : 117,186.34 = 25,534.97 : x
  2. Step 2: Convert to fraction form
    78,120.17/117,186.34 = 25,534.97/x
  3. Step 3: Cross multiply
    78,120.17x = 117,186.34 × 25,534.97
  4. Step 4: Simplify right side
    78,120.17x = 2,992,349,676.31
  5. Step 5: Solve for x
    x = 2,992,349,676.31/78,120.17
  6. Step 6: Final answer
    x = 38,304.44

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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.