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Finding the Fourth Proportional to 99,010.20, 138,964.20 and 99,010.20

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Solution

The fourth proportional to 99,010.20, 138,964.20 and 99,010.20 is: 138,964.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,010.20 : 138,964.20 = 99,010.20 : x
  2. Step 2: Convert to fraction form
    99,010.20/138,964.20 = 99,010.20/x
  3. Step 3: Cross multiply
    99,010.20x = 138,964.20 × 99,010.20
  4. Step 4: Simplify right side
    99,010.20x = 13,758,873,234.84
  5. Step 5: Solve for x
    x = 13,758,873,234.84/99,010.20
  6. Step 6: Final answer
    x = 138,964.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.