Home / 120,294.08-165,994.58-71,886.40

Finding the Fourth Proportional to 120,294.08, 165,994.58 and 71,886.40

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Solution

The fourth proportional to 120,294.08, 165,994.58 and 71,886.40 is: 99,196.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,294.08 : 165,994.58 = 71,886.40 : x
  2. Step 2: Convert to fraction form
    120,294.08/165,994.58 = 71,886.40/x
  3. Step 3: Cross multiply
    120,294.08x = 165,994.58 × 71,886.40
  4. Step 4: Simplify right side
    120,294.08x = 11,932,751,824.84
  5. Step 5: Solve for x
    x = 11,932,751,824.84/120,294.08
  6. Step 6: Final answer
    x = 99,196.51

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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.