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Finding the Fourth Proportional to 142,598.35, 214,107.79 and 79,541.67

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Solution

The fourth proportional to 142,598.35, 214,107.79 and 79,541.67 is: 119,429.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,598.35 : 214,107.79 = 79,541.67 : x
  2. Step 2: Convert to fraction form
    142,598.35/214,107.79 = 79,541.67/x
  3. Step 3: Cross multiply
    142,598.35x = 214,107.79 × 79,541.67
  4. Step 4: Simplify right side
    142,598.35x = 17,030,491,176.61
  5. Step 5: Solve for x
    x = 17,030,491,176.61/142,598.35
  6. Step 6: Final answer
    x = 119,429.79

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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.