Home / 156,074.42-215,405.26-102,439.46

Finding the Fourth Proportional to 156,074.42, 215,405.26 and 102,439.46

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Solution

The fourth proportional to 156,074.42, 215,405.26 and 102,439.46 is: 141,381.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,074.42 : 215,405.26 = 102,439.46 : x
  2. Step 2: Convert to fraction form
    156,074.42/215,405.26 = 102,439.46/x
  3. Step 3: Cross multiply
    156,074.42x = 215,405.26 × 102,439.46
  4. Step 4: Simplify right side
    156,074.42x = 22,065,998,515.56
  5. Step 5: Solve for x
    x = 22,065,998,515.56/156,074.42
  6. Step 6: Final answer
    x = 141,381.26

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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.