Home / 139,880.91-193,035.62-76,218.66

Finding the Fourth Proportional to 139,880.91, 193,035.62 and 76,218.66

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Solution

The fourth proportional to 139,880.91, 193,035.62 and 76,218.66 is: 105,181.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,880.91 : 193,035.62 = 76,218.66 : x
  2. Step 2: Convert to fraction form
    139,880.91/193,035.62 = 76,218.66/x
  3. Step 3: Cross multiply
    139,880.91x = 193,035.62 × 76,218.66
  4. Step 4: Simplify right side
    139,880.91x = 14,712,916,288.67
  5. Step 5: Solve for x
    x = 14,712,916,288.67/139,880.91
  6. Step 6: Final answer
    x = 105,181.73

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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.