Home / 156,609.46-216,122.64-84,990.10

Finding the Fourth Proportional to 156,609.46, 216,122.64 and 84,990.10

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Solution

The fourth proportional to 156,609.46, 216,122.64 and 84,990.10 is: 117,287.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,609.46 : 216,122.64 = 84,990.10 : x
  2. Step 2: Convert to fraction form
    156,609.46/216,122.64 = 84,990.10/x
  3. Step 3: Cross multiply
    156,609.46x = 216,122.64 × 84,990.10
  4. Step 4: Simplify right side
    156,609.46x = 18,368,284,785.86
  5. Step 5: Solve for x
    x = 18,368,284,785.86/156,609.46
  6. Step 6: Final answer
    x = 117,287.20

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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.