Home / 111,985.13-154,540.71-64,242.92

Finding the Fourth Proportional to 111,985.13, 154,540.71 and 64,242.92

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Solution

The fourth proportional to 111,985.13, 154,540.71 and 64,242.92 is: 88,655.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,985.13 : 154,540.71 = 64,242.92 : x
  2. Step 2: Convert to fraction form
    111,985.13/154,540.71 = 64,242.92/x
  3. Step 3: Cross multiply
    111,985.13x = 154,540.71 × 64,242.92
  4. Step 4: Simplify right side
    111,985.13x = 9,928,146,855.62
  5. Step 5: Solve for x
    x = 9,928,146,855.62/111,985.13
  6. Step 6: Final answer
    x = 88,655.94

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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.