Home / 120,340.48-180,528.54-112,959.76

Finding the Fourth Proportional to 120,340.48, 180,528.54 and 112,959.76

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Solution

The fourth proportional to 120,340.48, 180,528.54 and 112,959.76 is: 169,456.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,340.48 : 180,528.54 = 112,959.76 : x
  2. Step 2: Convert to fraction form
    120,340.48/180,528.54 = 112,959.76/x
  3. Step 3: Cross multiply
    120,340.48x = 180,528.54 × 112,959.76
  4. Step 4: Simplify right side
    120,340.48x = 20,392,460,551.55
  5. Step 5: Solve for x
    x = 20,392,460,551.55/120,340.48
  6. Step 6: Final answer
    x = 169,456.37

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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.