Home / 78,135.90-117,228.96-25,533.42

Finding the Fourth Proportional to 78,135.90, 117,228.96 and 25,533.42

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Solution

The fourth proportional to 78,135.90, 117,228.96 and 25,533.42 is: 38,308.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,135.90 : 117,228.96 = 25,533.42 : x
  2. Step 2: Convert to fraction form
    78,135.90/117,228.96 = 25,533.42/x
  3. Step 3: Cross multiply
    78,135.90x = 117,228.96 × 25,533.42
  4. Step 4: Simplify right side
    78,135.90x = 2,993,256,271.84
  5. Step 5: Solve for x
    x = 2,993,256,271.84/78,135.90
  6. Step 6: Final answer
    x = 38,308.34

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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.