Home / 137,607.28-189,895.75-80,279.93

Finding the Fourth Proportional to 137,607.28, 189,895.75 and 80,279.93

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Solution

The fourth proportional to 137,607.28, 189,895.75 and 80,279.93 is: 110,784.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,607.28 : 189,895.75 = 80,279.93 : x
  2. Step 2: Convert to fraction form
    137,607.28/189,895.75 = 80,279.93/x
  3. Step 3: Cross multiply
    137,607.28x = 189,895.75 × 80,279.93
  4. Step 4: Simplify right side
    137,607.28x = 15,244,817,791.34
  5. Step 5: Solve for x
    x = 15,244,817,791.34/137,607.28
  6. Step 6: Final answer
    x = 110,784.97

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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.