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Finding the Fourth Proportional to 98,747.70, 148,121.55 and 79,064.70

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Solution

The fourth proportional to 98,747.70, 148,121.55 and 79,064.70 is: 118,597.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,747.70 : 148,121.55 = 79,064.70 : x
  2. Step 2: Convert to fraction form
    98,747.70/148,121.55 = 79,064.70/x
  3. Step 3: Cross multiply
    98,747.70x = 148,121.55 × 79,064.70
  4. Step 4: Simplify right side
    98,747.70x = 11,711,185,914.29
  5. Step 5: Solve for x
    x = 11,711,185,914.29/98,747.70
  6. Step 6: Final answer
    x = 118,597.05

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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.