Home / 156,099.12-215,416.80-84,479.66

Finding the Fourth Proportional to 156,099.12, 215,416.80 and 84,479.66

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Solution

The fourth proportional to 156,099.12, 215,416.80 and 84,479.66 is: 116,581.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,099.12 : 215,416.80 = 84,479.66 : x
  2. Step 2: Convert to fraction form
    156,099.12/215,416.80 = 84,479.66/x
  3. Step 3: Cross multiply
    156,099.12x = 215,416.80 × 84,479.66
  4. Step 4: Simplify right side
    156,099.12x = 18,198,338,022.29
  5. Step 5: Solve for x
    x = 18,198,338,022.29/156,099.12
  6. Step 6: Final answer
    x = 116,581.94

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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.