Home / 99,429.12-137,212.22-54,717.12

Finding the Fourth Proportional to 99,429.12, 137,212.22 and 54,717.12

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Solution

The fourth proportional to 99,429.12, 137,212.22 and 54,717.12 is: 75,509.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,429.12 : 137,212.22 = 54,717.12 : x
  2. Step 2: Convert to fraction form
    99,429.12/137,212.22 = 54,717.12/x
  3. Step 3: Cross multiply
    99,429.12x = 137,212.22 × 54,717.12
  4. Step 4: Simplify right side
    99,429.12x = 7,507,857,507.21
  5. Step 5: Solve for x
    x = 7,507,857,507.21/99,429.12
  6. Step 6: Final answer
    x = 75,509.64

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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.