Home / 156,987.60-217,213.38-136,886.40

Finding the Fourth Proportional to 156,987.60, 217,213.38 and 136,886.40

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Solution

The fourth proportional to 156,987.60, 217,213.38 and 136,886.40 is: 189,400.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,987.60 : 217,213.38 = 136,886.40 : x
  2. Step 2: Convert to fraction form
    156,987.60/217,213.38 = 136,886.40/x
  3. Step 3: Cross multiply
    156,987.60x = 217,213.38 × 136,886.40
  4. Step 4: Simplify right side
    156,987.60x = 29,733,557,620.03
  5. Step 5: Solve for x
    x = 29,733,557,620.03/156,987.60
  6. Step 6: Final answer
    x = 189,400.68

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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.