Home / 139,901.10-193,063.53-76,238.88

Finding the Fourth Proportional to 139,901.10, 193,063.53 and 76,238.88

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Solution

The fourth proportional to 139,901.10, 193,063.53 and 76,238.88 is: 105,209.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,901.10 : 193,063.53 = 76,238.88 : x
  2. Step 2: Convert to fraction form
    139,901.10/193,063.53 = 76,238.88/x
  3. Step 3: Cross multiply
    139,901.10x = 193,063.53 × 76,238.88
  4. Step 4: Simplify right side
    139,901.10x = 14,718,947,296.05
  5. Step 5: Solve for x
    x = 14,718,947,296.05/139,901.10
  6. Step 6: Final answer
    x = 105,209.66

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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.