Home / 137,431.52-189,654.24-77,004.80

Finding the Fourth Proportional to 137,431.52, 189,654.24 and 77,004.80

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Solution

The fourth proportional to 137,431.52, 189,654.24 and 77,004.80 is: 106,265.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,431.52 : 189,654.24 = 77,004.80 : x
  2. Step 2: Convert to fraction form
    137,431.52/189,654.24 = 77,004.80/x
  3. Step 3: Cross multiply
    137,431.52x = 189,654.24 × 77,004.80
  4. Step 4: Simplify right side
    137,431.52x = 14,604,286,820.35
  5. Step 5: Solve for x
    x = 14,604,286,820.35/137,431.52
  6. Step 6: Final answer
    x = 106,265.92

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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.