Home / 137,340.48-189,514.20-76,902.72

Finding the Fourth Proportional to 137,340.48, 189,514.20 and 76,902.72

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Solution

The fourth proportional to 137,340.48, 189,514.20 and 76,902.72 is: 106,116.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,340.48 : 189,514.20 = 76,902.72 : x
  2. Step 2: Convert to fraction form
    137,340.48/189,514.20 = 76,902.72/x
  3. Step 3: Cross multiply
    137,340.48x = 189,514.20 × 76,902.72
  4. Step 4: Simplify right side
    137,340.48x = 14,574,157,458.62
  5. Step 5: Solve for x
    x = 14,574,157,458.62/137,340.48
  6. Step 6: Final answer
    x = 106,116.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.