Home / 196,278.40-294,273.60-77,891.20

Finding the Fourth Proportional to 196,278.40, 294,273.60 and 77,891.20

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Solution

The fourth proportional to 196,278.40, 294,273.60 and 77,891.20 is: 116,779.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,278.40 : 294,273.60 = 77,891.20 : x
  2. Step 2: Convert to fraction form
    196,278.40/294,273.60 = 77,891.20/x
  3. Step 3: Cross multiply
    196,278.40x = 294,273.60 × 77,891.20
  4. Step 4: Simplify right side
    196,278.40x = 22,921,323,832.32
  5. Step 5: Solve for x
    x = 22,921,323,832.32/196,278.40
  6. Step 6: Final answer
    x = 116,779.65

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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.