Home / 120,528.76-180,615.12-113,789.02

Finding the Fourth Proportional to 120,528.76, 180,615.12 and 113,789.02

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Solution

The fourth proportional to 120,528.76, 180,615.12 and 113,789.02 is: 170,515.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,528.76 : 180,615.12 = 113,789.02 : x
  2. Step 2: Convert to fraction form
    120,528.76/180,615.12 = 113,789.02/x
  3. Step 3: Cross multiply
    120,528.76x = 180,615.12 × 113,789.02
  4. Step 4: Simplify right side
    120,528.76x = 20,552,017,501.98
  5. Step 5: Solve for x
    x = 20,552,017,501.98/120,528.76
  6. Step 6: Final answer
    x = 170,515.46

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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.