Home / 136,756.10-188,732.87-76,338.50

Finding the Fourth Proportional to 136,756.10, 188,732.87 and 76,338.50

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Solution

The fourth proportional to 136,756.10, 188,732.87 and 76,338.50 is: 105,352.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,756.10 : 188,732.87 = 76,338.50 : x
  2. Step 2: Convert to fraction form
    136,756.10/188,732.87 = 76,338.50/x
  3. Step 3: Cross multiply
    136,756.10x = 188,732.87 × 76,338.50
  4. Step 4: Simplify right side
    136,756.10x = 14,407,584,196.50
  5. Step 5: Solve for x
    x = 14,407,584,196.50/136,756.10
  6. Step 6: Final answer
    x = 105,352.41

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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.