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Finding the Fourth Proportional to 111,159.36, 153,399.60 and 60,858

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Solution

The fourth proportional to 111,159.36, 153,399.60 and 60,858 is: 83,983.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,159.36 : 153,399.60 = 60,858 : x
  2. Step 2: Convert to fraction form
    111,159.36/153,399.60 = 60,858/x
  3. Step 3: Cross multiply
    111,159.36x = 153,399.60 × 60,858
  4. Step 4: Simplify right side
    111,159.36x = 9,335,592,856.80
  5. Step 5: Solve for x
    x = 9,335,592,856.80/111,159.36
  6. Step 6: Final answer
    x = 83,983.87

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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.