Home / 100,220.36-138,208.68-59,927.72

Finding the Fourth Proportional to 100,220.36, 138,208.68 and 59,927.72

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Solution

The fourth proportional to 100,220.36, 138,208.68 and 59,927.72 is: 82,643.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,220.36 : 138,208.68 = 59,927.72 : x
  2. Step 2: Convert to fraction form
    100,220.36/138,208.68 = 59,927.72/x
  3. Step 3: Cross multiply
    100,220.36x = 138,208.68 × 59,927.72
  4. Step 4: Simplify right side
    100,220.36x = 8,282,530,385.57
  5. Step 5: Solve for x
    x = 8,282,530,385.57/100,220.36
  6. Step 6: Final answer
    x = 82,643.20

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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.