Home / 100,189.80-138,217.68-59,883.36

Finding the Fourth Proportional to 100,189.80, 138,217.68 and 59,883.36

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Solution

The fourth proportional to 100,189.80, 138,217.68 and 59,883.36 is: 82,612.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,189.80 : 138,217.68 = 59,883.36 : x
  2. Step 2: Convert to fraction form
    100,189.80/138,217.68 = 59,883.36/x
  3. Step 3: Cross multiply
    100,189.80x = 138,217.68 × 59,883.36
  4. Step 4: Simplify right side
    100,189.80x = 8,276,939,089.80
  5. Step 5: Solve for x
    x = 8,276,939,089.80/100,189.80
  6. Step 6: Final answer
    x = 82,612.59

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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.