Home / 100,112.40-138,141.48-59,817.65

Finding the Fourth Proportional to 100,112.40, 138,141.48 and 59,817.65

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Solution

The fourth proportional to 100,112.40, 138,141.48 and 59,817.65 is: 82,540.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,112.40 : 138,141.48 = 59,817.65 : x
  2. Step 2: Convert to fraction form
    100,112.40/138,141.48 = 59,817.65/x
  3. Step 3: Cross multiply
    100,112.40x = 138,141.48 × 59,817.65
  4. Step 4: Simplify right side
    100,112.40x = 8,263,298,701.12
  5. Step 5: Solve for x
    x = 8,263,298,701.12/100,112.40
  6. Step 6: Final answer
    x = 82,540.21

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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.