Home / 120,072.29-165,695.43-72,316.31

Finding the Fourth Proportional to 120,072.29, 165,695.43 and 72,316.31

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Solution

The fourth proportional to 120,072.29, 165,695.43 and 72,316.31 is: 99,793.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,072.29 : 165,695.43 = 72,316.31 : x
  2. Step 2: Convert to fraction form
    120,072.29/165,695.43 = 72,316.31/x
  3. Step 3: Cross multiply
    120,072.29x = 165,695.43 × 72,316.31
  4. Step 4: Simplify right side
    120,072.29x = 11,982,481,252.99
  5. Step 5: Solve for x
    x = 11,982,481,252.99/120,072.29
  6. Step 6: Final answer
    x = 99,793.90

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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.