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Finding the Fourth Proportional to 125,423.74, 188,134.80 and 30,654.58

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Solution

The fourth proportional to 125,423.74, 188,134.80 and 30,654.58 is: 45,981.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,423.74 : 188,134.80 = 30,654.58 : x
  2. Step 2: Convert to fraction form
    125,423.74/188,134.80 = 30,654.58/x
  3. Step 3: Cross multiply
    125,423.74x = 188,134.80 × 30,654.58
  4. Step 4: Simplify right side
    125,423.74x = 5,767,193,277.38
  5. Step 5: Solve for x
    x = 5,767,193,277.38/125,423.74
  6. Step 6: Final answer
    x = 45,981.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.