Home / 111,935.66-154,503.78-89,431.34

Finding the Fourth Proportional to 111,935.66, 154,503.78 and 89,431.34

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Solution

The fourth proportional to 111,935.66, 154,503.78 and 89,431.34 is: 123,441.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,935.66 : 154,503.78 = 89,431.34 : x
  2. Step 2: Convert to fraction form
    111,935.66/154,503.78 = 89,431.34/x
  3. Step 3: Cross multiply
    111,935.66x = 154,503.78 × 89,431.34
  4. Step 4: Simplify right side
    111,935.66x = 13,817,480,080.47
  5. Step 5: Solve for x
    x = 13,817,480,080.47/111,935.66
  6. Step 6: Final answer
    x = 123,441.27

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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.