Home / 137,153.28-189,255.36-76,727.04

Finding the Fourth Proportional to 137,153.28, 189,255.36 and 76,727.04

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Solution

The fourth proportional to 137,153.28, 189,255.36 and 76,727.04 is: 105,874.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,153.28 : 189,255.36 = 76,727.04 : x
  2. Step 2: Convert to fraction form
    137,153.28/189,255.36 = 76,727.04/x
  3. Step 3: Cross multiply
    137,153.28x = 189,255.36 × 76,727.04
  4. Step 4: Simplify right side
    137,153.28x = 14,521,003,576.93
  5. Step 5: Solve for x
    x = 14,521,003,576.93/137,153.28
  6. Step 6: Final answer
    x = 105,874.27

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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.