Home / 210,238.05-315,781.56-126,157.92

Finding the Fourth Proportional to 210,238.05, 315,781.56 and 126,157.92

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Solution

The fourth proportional to 210,238.05, 315,781.56 and 126,157.92 is: 189,491.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,238.05 : 315,781.56 = 126,157.92 : x
  2. Step 2: Convert to fraction form
    210,238.05/315,781.56 = 126,157.92/x
  3. Step 3: Cross multiply
    210,238.05x = 315,781.56 × 126,157.92
  4. Step 4: Simplify right side
    210,238.05x = 39,838,344,783.96
  5. Step 5: Solve for x
    x = 39,838,344,783.96/210,238.05
  6. Step 6: Final answer
    x = 189,491.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.