Home / 136,756.08-188,732.88-76,338.60

Finding the Fourth Proportional to 136,756.08, 188,732.88 and 76,338.60

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Solution

The fourth proportional to 136,756.08, 188,732.88 and 76,338.60 is: 105,352.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,756.08 : 188,732.88 = 76,338.60 : x
  2. Step 2: Convert to fraction form
    136,756.08/188,732.88 = 76,338.60/x
  3. Step 3: Cross multiply
    136,756.08x = 188,732.88 × 76,338.60
  4. Step 4: Simplify right side
    136,756.08x = 14,407,603,833.17
  5. Step 5: Solve for x
    x = 14,407,603,833.17/136,756.08
  6. Step 6: Final answer
    x = 105,352.57

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1.5x scale

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.