Home / 137,238.24-189,387.54-76,808.19

Finding the Fourth Proportional to 137,238.24, 189,387.54 and 76,808.19

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Solution

The fourth proportional to 137,238.24, 189,387.54 and 76,808.19 is: 105,994.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,238.24 : 189,387.54 = 76,808.19 : x
  2. Step 2: Convert to fraction form
    137,238.24/189,387.54 = 76,808.19/x
  3. Step 3: Cross multiply
    137,238.24x = 189,387.54 × 76,808.19
  4. Step 4: Simplify right side
    137,238.24x = 14,546,514,155.95
  5. Step 5: Solve for x
    x = 14,546,514,155.95/137,238.24
  6. Step 6: Final answer
    x = 105,994.61

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1.5x scale

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.