Home / 100,206.66-138,218.60-64,441.92

Finding the Fourth Proportional to 100,206.66, 138,218.60 and 64,441.92

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Solution

The fourth proportional to 100,206.66, 138,218.60 and 64,441.92 is: 88,887.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,206.66 : 138,218.60 = 64,441.92 : x
  2. Step 2: Convert to fraction form
    100,206.66/138,218.60 = 64,441.92/x
  3. Step 3: Cross multiply
    100,206.66x = 138,218.60 × 64,441.92
  4. Step 4: Simplify right side
    100,206.66x = 8,907,071,963.71
  5. Step 5: Solve for x
    x = 8,907,071,963.71/100,206.66
  6. Step 6: Final answer
    x = 88,887.03

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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.