Home / 78,159.54-117,237.68-18,995.52

Finding the Fourth Proportional to 78,159.54, 117,237.68 and 18,995.52

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Solution

The fourth proportional to 78,159.54, 117,237.68 and 18,995.52 is: 28,492.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,159.54 : 117,237.68 = 18,995.52 : x
  2. Step 2: Convert to fraction form
    78,159.54/117,237.68 = 18,995.52/x
  3. Step 3: Cross multiply
    78,159.54x = 117,237.68 × 18,995.52
  4. Step 4: Simplify right side
    78,159.54x = 2,226,990,695.19
  5. Step 5: Solve for x
    x = 2,226,990,695.19/78,159.54
  6. Step 6: Final answer
    x = 28,492.88

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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.