Home / 137,268.80-189,417.12-76,835.52

Finding the Fourth Proportional to 137,268.80, 189,417.12 and 76,835.52

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Solution

The fourth proportional to 137,268.80, 189,417.12 and 76,835.52 is: 106,025.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,268.80 : 189,417.12 = 76,835.52 : x
  2. Step 2: Convert to fraction form
    137,268.80/189,417.12 = 76,835.52/x
  3. Step 3: Cross multiply
    137,268.80x = 189,417.12 × 76,835.52
  4. Step 4: Simplify right side
    137,268.80x = 14,553,962,912.10
  5. Step 5: Solve for x
    x = 14,553,962,912.10/137,268.80
  6. Step 6: Final answer
    x = 106,025.28

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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.