Home / 78,165.27-117,177.84-28,233.63

Finding the Fourth Proportional to 78,165.27, 117,177.84 and 28,233.63

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Solution

The fourth proportional to 78,165.27, 117,177.84 and 28,233.63 is: 42,325.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,165.27 : 117,177.84 = 28,233.63 : x
  2. Step 2: Convert to fraction form
    78,165.27/117,177.84 = 28,233.63/x
  3. Step 3: Cross multiply
    78,165.27x = 117,177.84 × 28,233.63
  4. Step 4: Simplify right side
    78,165.27x = 3,308,355,778.76
  5. Step 5: Solve for x
    x = 3,308,355,778.76/78,165.27
  6. Step 6: Final answer
    x = 42,325.14

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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.