Home / 100,210.24-138,293.76-55,498.24

Finding the Fourth Proportional to 100,210.24, 138,293.76 and 55,498.24

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Solution

The fourth proportional to 100,210.24, 138,293.76 and 55,498.24 is: 76,589.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,210.24 : 138,293.76 = 55,498.24 : x
  2. Step 2: Convert to fraction form
    100,210.24/138,293.76 = 55,498.24/x
  3. Step 3: Cross multiply
    100,210.24x = 138,293.76 × 55,498.24
  4. Step 4: Simplify right side
    100,210.24x = 7,675,060,282.98
  5. Step 5: Solve for x
    x = 7,675,060,282.98/100,210.24
  6. Step 6: Final answer
    x = 76,589.58

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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.