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Finding the Fourth Proportional to 98,415,102.80, 147,622,654.20 and 69,693,669.20

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Solution

The fourth proportional to 98,415,102.80, 147,622,654.20 and 69,693,669.20 is: 104,540,503.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,415,102.80 : 147,622,654.20 = 69,693,669.20 : x
  2. Step 2: Convert to fraction form
    98,415,102.80/147,622,654.20 = 69,693,669.20/x
  3. Step 3: Cross multiply
    98,415,102.80x = 147,622,654.20 × 69,693,669.20
  4. Step 4: Simplify right side
    98,415,102.80x = 10,288,364,428,240,790
  5. Step 5: Solve for x
    x = 10,288,364,428,240,790/98,415,102.80
  6. Step 6: Final answer
    x = 104,540,503.80

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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.