Home / 120,108.71-180,159.54-31,362.23

Finding the Fourth Proportional to 120,108.71, 180,159.54 and 31,362.23

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Solution

The fourth proportional to 120,108.71, 180,159.54 and 31,362.23 is: 47,042.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,108.71 : 180,159.54 = 31,362.23 : x
  2. Step 2: Convert to fraction form
    120,108.71/180,159.54 = 31,362.23/x
  3. Step 3: Cross multiply
    120,108.71x = 180,159.54 × 31,362.23
  4. Step 4: Simplify right side
    120,108.71x = 5,650,204,930.17
  5. Step 5: Solve for x
    x = 5,650,204,930.17/120,108.71
  6. Step 6: Final answer
    x = 47,042.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.