Home / 120,551.12-180,838.83-31,810.76

Finding the Fourth Proportional to 120,551.12, 180,838.83 and 31,810.76

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Solution

The fourth proportional to 120,551.12, 180,838.83 and 31,810.76 is: 47,719.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,551.12 : 180,838.83 = 31,810.76 : x
  2. Step 2: Convert to fraction form
    120,551.12/180,838.83 = 31,810.76/x
  3. Step 3: Cross multiply
    120,551.12x = 180,838.83 × 31,810.76
  4. Step 4: Simplify right side
    120,551.12x = 5,752,620,619.81
  5. Step 5: Solve for x
    x = 5,752,620,619.81/120,551.12
  6. Step 6: Final answer
    x = 47,719.35

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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.