Home / 128,268.05-191,462.76-113,117.90

Finding the Fourth Proportional to 128,268.05, 191,462.76 and 113,117.90

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Solution

The fourth proportional to 128,268.05, 191,462.76 and 113,117.90 is: 168,848.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,268.05 : 191,462.76 = 113,117.90 : x
  2. Step 2: Convert to fraction form
    128,268.05/191,462.76 = 113,117.90/x
  3. Step 3: Cross multiply
    128,268.05x = 191,462.76 × 113,117.90
  4. Step 4: Simplify right side
    128,268.05x = 21,657,864,382.09
  5. Step 5: Solve for x
    x = 21,657,864,382.09/128,268.05
  6. Step 6: Final answer
    x = 168,848.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.