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Finding the Fourth Proportional to 98,715.56, 148,394.46 and 79,207.88

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Solution

The fourth proportional to 98,715.56, 148,394.46 and 79,207.88 is: 119,069.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,715.56 : 148,394.46 = 79,207.88 : x
  2. Step 2: Convert to fraction form
    98,715.56/148,394.46 = 79,207.88/x
  3. Step 3: Cross multiply
    98,715.56x = 148,394.46 × 79,207.88
  4. Step 4: Simplify right side
    98,715.56x = 11,754,010,580.34
  5. Step 5: Solve for x
    x = 11,754,010,580.34/98,715.56
  6. Step 6: Final answer
    x = 119,069.48

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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.