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Finding the Fourth Proportional to 104,811.40, 157,073.10 and 67,256.20

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Solution

The fourth proportional to 104,811.40, 157,073.10 and 67,256.20 is: 100,791.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,811.40 : 157,073.10 = 67,256.20 : x
  2. Step 2: Convert to fraction form
    104,811.40/157,073.10 = 67,256.20/x
  3. Step 3: Cross multiply
    104,811.40x = 157,073.10 × 67,256.20
  4. Step 4: Simplify right side
    104,811.40x = 10,564,139,828.22
  5. Step 5: Solve for x
    x = 10,564,139,828.22/104,811.40
  6. Step 6: Final answer
    x = 100,791.90

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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.