Home / 128,785.10-193,175.56-35,290.84

Finding the Fourth Proportional to 128,785.10, 193,175.56 and 35,290.84

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Solution

The fourth proportional to 128,785.10, 193,175.56 and 35,290.84 is: 52,935.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,785.10 : 193,175.56 = 35,290.84 : x
  2. Step 2: Convert to fraction form
    128,785.10/193,175.56 = 35,290.84/x
  3. Step 3: Cross multiply
    128,785.10x = 193,175.56 × 35,290.84
  4. Step 4: Simplify right side
    128,785.10x = 6,817,327,779.87
  5. Step 5: Solve for x
    x = 6,817,327,779.87/128,785.10
  6. Step 6: Final answer
    x = 52,935.69

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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.