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Finding the Fourth Proportional to 124,367.87, 171,453.88 and 105,170.67

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Solution

The fourth proportional to 124,367.87, 171,453.88 and 105,170.67 is: 144,988.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,367.87 : 171,453.88 = 105,170.67 : x
  2. Step 2: Convert to fraction form
    124,367.87/171,453.88 = 105,170.67/x
  3. Step 3: Cross multiply
    124,367.87x = 171,453.88 × 105,170.67
  4. Step 4: Simplify right side
    124,367.87x = 18,031,919,565.16
  5. Step 5: Solve for x
    x = 18,031,919,565.16/124,367.87
  6. Step 6: Final answer
    x = 144,988.57

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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.