Home / 139,876.49-193,029.58-76,214.28

Finding the Fourth Proportional to 139,876.49, 193,029.58 and 76,214.28

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Solution

The fourth proportional to 139,876.49, 193,029.58 and 76,214.28 is: 105,175.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,876.49 : 193,029.58 = 76,214.28 : x
  2. Step 2: Convert to fraction form
    139,876.49/193,029.58 = 76,214.28/x
  3. Step 3: Cross multiply
    139,876.49x = 193,029.58 × 76,214.28
  4. Step 4: Simplify right side
    139,876.49x = 14,711,611,277.53
  5. Step 5: Solve for x
    x = 14,711,611,277.53/139,876.49
  6. Step 6: Final answer
    x = 105,175.73

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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.