Home / 78,156.30-117,232.82-18,992.28

Finding the Fourth Proportional to 78,156.30, 117,232.82 and 18,992.28

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Solution

The fourth proportional to 78,156.30, 117,232.82 and 18,992.28 is: 28,488.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,156.30 : 117,232.82 = 18,992.28 : x
  2. Step 2: Convert to fraction form
    78,156.30/117,232.82 = 18,992.28/x
  3. Step 3: Cross multiply
    78,156.30x = 117,232.82 × 18,992.28
  4. Step 4: Simplify right side
    78,156.30x = 2,226,518,542.63
  5. Step 5: Solve for x
    x = 2,226,518,542.63/78,156.30
  6. Step 6: Final answer
    x = 28,488.02

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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.