Home / 156,039.68-215,334.66-84,419.72

Finding the Fourth Proportional to 156,039.68, 215,334.66 and 84,419.72

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Solution

The fourth proportional to 156,039.68, 215,334.66 and 84,419.72 is: 116,499.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,039.68 : 215,334.66 = 84,419.72 : x
  2. Step 2: Convert to fraction form
    156,039.68/215,334.66 = 84,419.72/x
  3. Step 3: Cross multiply
    156,039.68x = 215,334.66 × 84,419.72
  4. Step 4: Simplify right side
    156,039.68x = 18,178,491,703.50
  5. Step 5: Solve for x
    x = 18,178,491,703.50/156,039.68
  6. Step 6: Final answer
    x = 116,499.16

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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.