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Finding the Fourth Proportional to 132,838.17, 183,315.48 and 72,408.81

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Solution

The fourth proportional to 132,838.17, 183,315.48 and 72,408.81 is: 99,923.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,838.17 : 183,315.48 = 72,408.81 : x
  2. Step 2: Convert to fraction form
    132,838.17/183,315.48 = 72,408.81/x
  3. Step 3: Cross multiply
    132,838.17x = 183,315.48 × 72,408.81
  4. Step 4: Simplify right side
    132,838.17x = 13,273,655,761.38
  5. Step 5: Solve for x
    x = 13,273,655,761.38/132,838.17
  6. Step 6: Final answer
    x = 99,923.51

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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.