Home / 103,173.53-142,318.98-64,872.36

Finding the Fourth Proportional to 103,173.53, 142,318.98 and 64,872.36

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Solution

The fourth proportional to 103,173.53, 142,318.98 and 64,872.36 is: 89,485.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,173.53 : 142,318.98 = 64,872.36 : x
  2. Step 2: Convert to fraction form
    103,173.53/142,318.98 = 64,872.36/x
  3. Step 3: Cross multiply
    103,173.53x = 142,318.98 × 64,872.36
  4. Step 4: Simplify right side
    103,173.53x = 9,232,568,105.39
  5. Step 5: Solve for x
    x = 9,232,568,105.39/103,173.53
  6. Step 6: Final answer
    x = 89,485.83

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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.