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Finding the Fourth Proportional to 132,915, 199,116.66 and 104,685.72

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Solution

The fourth proportional to 132,915, 199,116.66 and 104,685.72 is: 156,827.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,915 : 199,116.66 = 104,685.72 : x
  2. Step 2: Convert to fraction form
    132,915/199,116.66 = 104,685.72/x
  3. Step 3: Cross multiply
    132,915x = 199,116.66 × 104,685.72
  4. Step 4: Simplify right side
    132,915x = 20,844,670,916.10
  5. Step 5: Solve for x
    x = 20,844,670,916.10/132,915
  6. Step 6: Final answer
    x = 156,827.08

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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.