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Finding the Fourth Proportional to 119,434.21, 178,954.48 and 69,373.78

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Solution

The fourth proportional to 119,434.21, 178,954.48 and 69,373.78 is: 103,946.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,434.21 : 178,954.48 = 69,373.78 : x
  2. Step 2: Convert to fraction form
    119,434.21/178,954.48 = 69,373.78/x
  3. Step 3: Cross multiply
    119,434.21x = 178,954.48 × 69,373.78
  4. Step 4: Simplify right side
    119,434.21x = 12,414,748,364.87
  5. Step 5: Solve for x
    x = 12,414,748,364.87/119,434.21
  6. Step 6: Final answer
    x = 103,946.34

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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.