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Finding the Fourth Proportional to 132,915.54, 199,488.47 and 69,780.36

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Solution

The fourth proportional to 132,915.54, 199,488.47 and 69,780.36 is: 104,731.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,915.54 : 199,488.47 = 69,780.36 : x
  2. Step 2: Convert to fraction form
    132,915.54/199,488.47 = 69,780.36/x
  3. Step 3: Cross multiply
    132,915.54x = 199,488.47 × 69,780.36
  4. Step 4: Simplify right side
    132,915.54x = 13,920,376,903.55
  5. Step 5: Solve for x
    x = 13,920,376,903.55/132,915.54
  6. Step 6: Final answer
    x = 104,731.00

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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.