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Finding the Fourth Proportional to 132,834.88, 183,308.88 and 72,407.20

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Solution

The fourth proportional to 132,834.88, 183,308.88 and 72,407.20 is: 99,920.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,834.88 : 183,308.88 = 72,407.20 : x
  2. Step 2: Convert to fraction form
    132,834.88/183,308.88 = 72,407.20/x
  3. Step 3: Cross multiply
    132,834.88x = 183,308.88 × 72,407.20
  4. Step 4: Simplify right side
    132,834.88x = 13,272,882,735.94
  5. Step 5: Solve for x
    x = 13,272,882,735.94/132,834.88
  6. Step 6: Final answer
    x = 99,920.16

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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.