Home / 156,502.72-234,229.20-128,421.64

Finding the Fourth Proportional to 156,502.72, 234,229.20 and 128,421.64

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Solution

The fourth proportional to 156,502.72, 234,229.20 and 128,421.64 is: 192,201.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,502.72 : 234,229.20 = 128,421.64 : x
  2. Step 2: Convert to fraction form
    156,502.72/234,229.20 = 128,421.64/x
  3. Step 3: Cross multiply
    156,502.72x = 234,229.20 × 128,421.64
  4. Step 4: Simplify right side
    156,502.72x = 30,080,097,999.89
  5. Step 5: Solve for x
    x = 30,080,097,999.89/156,502.72
  6. Step 6: Final answer
    x = 192,201.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.