Home / 100,045.74-138,105.63-62,338.62

Finding the Fourth Proportional to 100,045.74, 138,105.63 and 62,338.62

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Solution

The fourth proportional to 100,045.74, 138,105.63 and 62,338.62 is: 86,053.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,045.74 : 138,105.63 = 62,338.62 : x
  2. Step 2: Convert to fraction form
    100,045.74/138,105.63 = 62,338.62/x
  3. Step 3: Cross multiply
    100,045.74x = 138,105.63 × 62,338.62
  4. Step 4: Simplify right side
    100,045.74x = 8,609,314,388.43
  5. Step 5: Solve for x
    x = 8,609,314,388.43/100,045.74
  6. Step 6: Final answer
    x = 86,053.78

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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.