Home / 99,698.16-137,577.24-54,987.12

Finding the Fourth Proportional to 99,698.16, 137,577.24 and 54,987.12

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Solution

The fourth proportional to 99,698.16, 137,577.24 and 54,987.12 is: 75,878.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,698.16 : 137,577.24 = 54,987.12 : x
  2. Step 2: Convert to fraction form
    99,698.16/137,577.24 = 54,987.12/x
  3. Step 3: Cross multiply
    99,698.16x = 137,577.24 × 54,987.12
  4. Step 4: Simplify right side
    99,698.16x = 7,564,976,205.15
  5. Step 5: Solve for x
    x = 7,564,976,205.15/99,698.16
  6. Step 6: Final answer
    x = 75,878.79

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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.