Home / 78,133.90-117,225.96-25,531.42

Finding the Fourth Proportional to 78,133.90, 117,225.96 and 25,531.42

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Solution

The fourth proportional to 78,133.90, 117,225.96 and 25,531.42 is: 38,305.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,133.90 : 117,225.96 = 25,531.42 : x
  2. Step 2: Convert to fraction form
    78,133.90/117,225.96 = 25,531.42/x
  3. Step 3: Cross multiply
    78,133.90x = 117,225.96 × 25,531.42
  4. Step 4: Simplify right side
    78,133.90x = 2,992,945,219.66
  5. Step 5: Solve for x
    x = 2,992,945,219.66/78,133.90
  6. Step 6: Final answer
    x = 38,305.34

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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.