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Finding the Fourth Proportional to 132,077.70, 198,116.55 and 69,869.70

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Solution

The fourth proportional to 132,077.70, 198,116.55 and 69,869.70 is: 104,804.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,077.70 : 198,116.55 = 69,869.70 : x
  2. Step 2: Convert to fraction form
    132,077.70/198,116.55 = 69,869.70/x
  3. Step 3: Cross multiply
    132,077.70x = 198,116.55 × 69,869.70
  4. Step 4: Simplify right side
    132,077.70x = 13,842,343,913.54
  5. Step 5: Solve for x
    x = 13,842,343,913.54/132,077.70
  6. Step 6: Final answer
    x = 104,804.55

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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.