Home / 120,135.83-165,784.52-66,419.46

Finding the Fourth Proportional to 120,135.83, 165,784.52 and 66,419.46

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Solution

The fourth proportional to 120,135.83, 165,784.52 and 66,419.46 is: 91,657.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,135.83 : 165,784.52 = 66,419.46 : x
  2. Step 2: Convert to fraction form
    120,135.83/165,784.52 = 66,419.46/x
  3. Step 3: Cross multiply
    120,135.83x = 165,784.52 × 66,419.46
  4. Step 4: Simplify right side
    120,135.83x = 11,011,318,460.81
  5. Step 5: Solve for x
    x = 11,011,318,460.81/120,135.83
  6. Step 6: Final answer
    x = 91,657.24

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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.