Home / 111,429.36-153,769.88-61,127.92

Finding the Fourth Proportional to 111,429.36, 153,769.88 and 61,127.92

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Solution

The fourth proportional to 111,429.36, 153,769.88 and 61,127.92 is: 84,355.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,429.36 : 153,769.88 = 61,127.92 : x
  2. Step 2: Convert to fraction form
    111,429.36/153,769.88 = 61,127.92/x
  3. Step 3: Cross multiply
    111,429.36x = 153,769.88 × 61,127.92
  4. Step 4: Simplify right side
    111,429.36x = 9,399,632,923.05
  5. Step 5: Solve for x
    x = 9,399,632,923.05/111,429.36
  6. Step 6: Final answer
    x = 84,355.08

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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.