Home / 99,128.25-136,794.82-53,806.32

Finding the Fourth Proportional to 99,128.25, 136,794.82 and 53,806.32

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Solution

The fourth proportional to 99,128.25, 136,794.82 and 53,806.32 is: 74,251.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,128.25 : 136,794.82 = 53,806.32 : x
  2. Step 2: Convert to fraction form
    99,128.25/136,794.82 = 53,806.32/x
  3. Step 3: Cross multiply
    99,128.25x = 136,794.82 × 53,806.32
  4. Step 4: Simplify right side
    99,128.25x = 7,360,425,859.26
  5. Step 5: Solve for x
    x = 7,360,425,859.26/99,128.25
  6. Step 6: Final answer
    x = 74,251.55

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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.