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Finding the Fourth Proportional to 119,812.35, 179,811.47 and 45,000.54

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Solution

The fourth proportional to 119,812.35, 179,811.47 and 45,000.54 is: 67,535.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,812.35 : 179,811.47 = 45,000.54 : x
  2. Step 2: Convert to fraction form
    119,812.35/179,811.47 = 45,000.54/x
  3. Step 3: Cross multiply
    119,812.35x = 179,811.47 × 45,000.54
  4. Step 4: Simplify right side
    119,812.35x = 8,091,613,023.19
  5. Step 5: Solve for x
    x = 8,091,613,023.19/119,812.35
  6. Step 6: Final answer
    x = 67,535.72

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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.