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Finding the Fourth Proportional to 110,291.72, 152,121.02 and 69,970.68

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Solution

The fourth proportional to 110,291.72, 152,121.02 and 69,970.68 is: 96,507.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,291.72 : 152,121.02 = 69,970.68 : x
  2. Step 2: Convert to fraction form
    110,291.72/152,121.02 = 69,970.68/x
  3. Step 3: Cross multiply
    110,291.72x = 152,121.02 × 69,970.68
  4. Step 4: Simplify right side
    110,291.72x = 10,644,011,211.69
  5. Step 5: Solve for x
    x = 10,644,011,211.69/110,291.72
  6. Step 6: Final answer
    x = 96,507.80

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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.