Home / 210,118.28-315,171.66-69,879.56

Finding the Fourth Proportional to 210,118.28, 315,171.66 and 69,879.56

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Solution

The fourth proportional to 210,118.28, 315,171.66 and 69,879.56 is: 104,817.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,118.28 : 315,171.66 = 69,879.56 : x
  2. Step 2: Convert to fraction form
    210,118.28/315,171.66 = 69,879.56/x
  3. Step 3: Cross multiply
    210,118.28x = 315,171.66 × 69,879.56
  4. Step 4: Simplify right side
    210,118.28x = 22,024,056,925.27
  5. Step 5: Solve for x
    x = 22,024,056,925.27/210,118.28
  6. Step 6: Final answer
    x = 104,817.42

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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.