Home / 99,928.51-137,901.06-54,606.78

Finding the Fourth Proportional to 99,928.51, 137,901.06 and 54,606.78

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Solution

The fourth proportional to 99,928.51, 137,901.06 and 54,606.78 is: 75,357.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,928.51 : 137,901.06 = 54,606.78 : x
  2. Step 2: Convert to fraction form
    99,928.51/137,901.06 = 54,606.78/x
  3. Step 3: Cross multiply
    99,928.51x = 137,901.06 × 54,606.78
  4. Step 4: Simplify right side
    99,928.51x = 7,530,332,845.19
  5. Step 5: Solve for x
    x = 7,530,332,845.19/99,928.51
  6. Step 6: Final answer
    x = 75,357.20

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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.