Home / 78,118.16-117,177.40-28,233.47

Finding the Fourth Proportional to 78,118.16, 117,177.40 and 28,233.47

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Solution

The fourth proportional to 78,118.16, 117,177.40 and 28,233.47 is: 42,350.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,118.16 : 117,177.40 = 28,233.47 : x
  2. Step 2: Convert to fraction form
    78,118.16/117,177.40 = 28,233.47/x
  3. Step 3: Cross multiply
    78,118.16x = 117,177.40 × 28,233.47
  4. Step 4: Simplify right side
    78,118.16x = 3,308,324,607.58
  5. Step 5: Solve for x
    x = 3,308,324,607.58/78,118.16
  6. Step 6: Final answer
    x = 42,350.27

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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.