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Finding the Fourth Proportional to 108,737.76, 149,828.04 and 101,257.68

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Solution

The fourth proportional to 108,737.76, 149,828.04 and 101,257.68 is: 139,521.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,737.76 : 149,828.04 = 101,257.68 : x
  2. Step 2: Convert to fraction form
    108,737.76/149,828.04 = 101,257.68/x
  3. Step 3: Cross multiply
    108,737.76x = 149,828.04 × 101,257.68
  4. Step 4: Simplify right side
    108,737.76x = 15,171,239,729.35
  5. Step 5: Solve for x
    x = 15,171,239,729.35/108,737.76
  6. Step 6: Final answer
    x = 139,521.36

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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.