Home / 100,116.63-138,210.94-57,666.96

Finding the Fourth Proportional to 100,116.63, 138,210.94 and 57,666.96

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Solution

The fourth proportional to 100,116.63, 138,210.94 and 57,666.96 is: 79,609.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,116.63 : 138,210.94 = 57,666.96 : x
  2. Step 2: Convert to fraction form
    100,116.63/138,210.94 = 57,666.96/x
  3. Step 3: Cross multiply
    100,116.63x = 138,210.94 × 57,666.96
  4. Step 4: Simplify right side
    100,116.63x = 7,970,204,748.54
  5. Step 5: Solve for x
    x = 7,970,204,748.54/100,116.63
  6. Step 6: Final answer
    x = 79,609.20

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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.