Home / 137,296.40-189,469.08-76,867.16

Finding the Fourth Proportional to 137,296.40, 189,469.08 and 76,867.16

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Solution

The fourth proportional to 137,296.40, 189,469.08 and 76,867.16 is: 106,076.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,296.40 : 189,469.08 = 76,867.16 : x
  2. Step 2: Convert to fraction form
    137,296.40/189,469.08 = 76,867.16/x
  3. Step 3: Cross multiply
    137,296.40x = 189,469.08 × 76,867.16
  4. Step 4: Simplify right side
    137,296.40x = 14,563,949,140.07
  5. Step 5: Solve for x
    x = 14,563,949,140.07/137,296.40
  6. Step 6: Final answer
    x = 106,076.70

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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.