Home / 120,688.52-180,979.32-64,515.02

Finding the Fourth Proportional to 120,688.52, 180,979.32 and 64,515.02

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Solution

The fourth proportional to 120,688.52, 180,979.32 and 64,515.02 is: 96,743.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,688.52 : 180,979.32 = 64,515.02 : x
  2. Step 2: Convert to fraction form
    120,688.52/180,979.32 = 64,515.02/x
  3. Step 3: Cross multiply
    120,688.52x = 180,979.32 × 64,515.02
  4. Step 4: Simplify right side
    120,688.52x = 11,675,884,449.39
  5. Step 5: Solve for x
    x = 11,675,884,449.39/120,688.52
  6. Step 6: Final answer
    x = 96,743.95

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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.