Home / 137,540.20-189,805.32-77,110.86

Finding the Fourth Proportional to 137,540.20, 189,805.32 and 77,110.86

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Solution

The fourth proportional to 137,540.20, 189,805.32 and 77,110.86 is: 106,412.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,540.20 : 189,805.32 = 77,110.86 : x
  2. Step 2: Convert to fraction form
    137,540.20/189,805.32 = 77,110.86/x
  3. Step 3: Cross multiply
    137,540.20x = 189,805.32 × 77,110.86
  4. Step 4: Simplify right side
    137,540.20x = 14,636,051,457.78
  5. Step 5: Solve for x
    x = 14,636,051,457.78/137,540.20
  6. Step 6: Final answer
    x = 106,412.90

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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.