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Finding the Fourth Proportional to 125,174.50, 187,074.52 and 91,511.39

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Solution

The fourth proportional to 125,174.50, 187,074.52 and 91,511.39 is: 136,764.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,174.50 : 187,074.52 = 91,511.39 : x
  2. Step 2: Convert to fraction form
    125,174.50/187,074.52 = 91,511.39/x
  3. Step 3: Cross multiply
    125,174.50x = 187,074.52 × 91,511.39
  4. Step 4: Simplify right side
    125,174.50x = 17,119,449,358.78
  5. Step 5: Solve for x
    x = 17,119,449,358.78/125,174.50
  6. Step 6: Final answer
    x = 136,764.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.