Home / 139,920.20-193,095.09-79,501.07

Finding the Fourth Proportional to 139,920.20, 193,095.09 and 79,501.07

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Solution

The fourth proportional to 139,920.20, 193,095.09 and 79,501.07 is: 109,714.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,920.20 : 193,095.09 = 79,501.07 : x
  2. Step 2: Convert to fraction form
    139,920.20/193,095.09 = 79,501.07/x
  3. Step 3: Cross multiply
    139,920.20x = 193,095.09 × 79,501.07
  4. Step 4: Simplify right side
    139,920.20x = 15,351,265,869.24
  5. Step 5: Solve for x
    x = 15,351,265,869.24/139,920.20
  6. Step 6: Final answer
    x = 109,714.44

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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.