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Finding the Fourth Proportional to 111,744.48, 154,203.48 and 61,443.12

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Solution

The fourth proportional to 111,744.48, 154,203.48 and 61,443.12 is: 84,789.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,744.48 : 154,203.48 = 61,443.12 : x
  2. Step 2: Convert to fraction form
    111,744.48/154,203.48 = 61,443.12/x
  3. Step 3: Cross multiply
    111,744.48x = 154,203.48 × 61,443.12
  4. Step 4: Simplify right side
    111,744.48x = 9,474,742,926.06
  5. Step 5: Solve for x
    x = 9,474,742,926.06/111,744.48
  6. Step 6: Final answer
    x = 84,789.36

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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.