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Finding the Fourth Proportional to 145,722.79, 218,243.98 and 112,176.67

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Solution

The fourth proportional to 145,722.79, 218,243.98 and 112,176.67 is: 168,003.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,722.79 : 218,243.98 = 112,176.67 : x
  2. Step 2: Convert to fraction form
    145,722.79/218,243.98 = 112,176.67/x
  3. Step 3: Cross multiply
    145,722.79x = 218,243.98 × 112,176.67
  4. Step 4: Simplify right side
    145,722.79x = 24,481,882,923.95
  5. Step 5: Solve for x
    x = 24,481,882,923.95/145,722.79
  6. Step 6: Final answer
    x = 168,003.12

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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.