Home / 139,918.28-193,081.61-76,254.71

Finding the Fourth Proportional to 139,918.28, 193,081.61 and 76,254.71

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Solution

The fourth proportional to 139,918.28, 193,081.61 and 76,254.71 is: 105,228.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,918.28 : 193,081.61 = 76,254.71 : x
  2. Step 2: Convert to fraction form
    139,918.28/193,081.61 = 76,254.71/x
  3. Step 3: Cross multiply
    139,918.28x = 193,081.61 × 76,254.71
  4. Step 4: Simplify right side
    139,918.28x = 14,723,381,795.61
  5. Step 5: Solve for x
    x = 14,723,381,795.61/139,918.28
  6. Step 6: Final answer
    x = 105,228.44

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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.