Home / 120,063.06-165,686.31-66,351.15

Finding the Fourth Proportional to 120,063.06, 165,686.31 and 66,351.15

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Solution

The fourth proportional to 120,063.06, 165,686.31 and 66,351.15 is: 91,564.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,063.06 : 165,686.31 = 66,351.15 : x
  2. Step 2: Convert to fraction form
    120,063.06/165,686.31 = 66,351.15/x
  3. Step 3: Cross multiply
    120,063.06x = 165,686.31 × 66,351.15
  4. Step 4: Simplify right side
    120,063.06x = 10,993,477,207.76
  5. Step 5: Solve for x
    x = 10,993,477,207.76/120,063.06
  6. Step 6: Final answer
    x = 91,564.19

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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.