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Finding the Fourth Proportional to 189,967.94, 262,132.97 and 109,421.67

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Solution

The fourth proportional to 189,967.94, 262,132.97 and 109,421.67 is: 150,988.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,967.94 : 262,132.97 = 109,421.67 : x
  2. Step 2: Convert to fraction form
    189,967.94/262,132.97 = 109,421.67/x
  3. Step 3: Cross multiply
    189,967.94x = 262,132.97 × 109,421.67
  4. Step 4: Simplify right side
    189,967.94x = 28,683,027,339.46
  5. Step 5: Solve for x
    x = 28,683,027,339.46/189,967.94
  6. Step 6: Final answer
    x = 150,988.78

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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.