Home / 128,926.62-193,389.66-72,741.24

Finding the Fourth Proportional to 128,926.62, 193,389.66 and 72,741.24

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Solution

The fourth proportional to 128,926.62, 193,389.66 and 72,741.24 is: 109,111.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,926.62 : 193,389.66 = 72,741.24 : x
  2. Step 2: Convert to fraction form
    128,926.62/193,389.66 = 72,741.24/x
  3. Step 3: Cross multiply
    128,926.62x = 193,389.66 × 72,741.24
  4. Step 4: Simplify right side
    128,926.62x = 14,067,403,671.58
  5. Step 5: Solve for x
    x = 14,067,403,671.58/128,926.62
  6. Step 6: Final answer
    x = 109,111.71

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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.