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Finding the Fourth Proportional to 99,107.69, 136,769.61 and 53,786.06

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Solution

The fourth proportional to 99,107.69, 136,769.61 and 53,786.06 is: 74,225.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,107.69 : 136,769.61 = 53,786.06 : x
  2. Step 2: Convert to fraction form
    99,107.69/136,769.61 = 53,786.06/x
  3. Step 3: Cross multiply
    99,107.69x = 136,769.61 × 53,786.06
  4. Step 4: Simplify right side
    99,107.69x = 7,356,298,449.64
  5. Step 5: Solve for x
    x = 7,356,298,449.64/99,107.69
  6. Step 6: Final answer
    x = 74,225.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.