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Finding the Fourth Proportional to 98,969.18, 148,486.34 and 65,819.66

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Solution

The fourth proportional to 98,969.18, 148,486.34 and 65,819.66 is: 98,751.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,969.18 : 148,486.34 = 65,819.66 : x
  2. Step 2: Convert to fraction form
    98,969.18/148,486.34 = 65,819.66/x
  3. Step 3: Cross multiply
    98,969.18x = 148,486.34 × 65,819.66
  4. Step 4: Simplify right side
    98,969.18x = 9,773,319,835.56
  5. Step 5: Solve for x
    x = 9,773,319,835.56/98,969.18
  6. Step 6: Final answer
    x = 98,751.15

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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.