Home / 109,500.36-151,115.64-61,752.72

Finding the Fourth Proportional to 109,500.36, 151,115.64 and 61,752.72

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Solution

The fourth proportional to 109,500.36, 151,115.64 and 61,752.72 is: 85,221.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,500.36 : 151,115.64 = 61,752.72 : x
  2. Step 2: Convert to fraction form
    109,500.36/151,115.64 = 61,752.72/x
  3. Step 3: Cross multiply
    109,500.36x = 151,115.64 × 61,752.72
  4. Step 4: Simplify right side
    109,500.36x = 9,331,801,804.54
  5. Step 5: Solve for x
    x = 9,331,801,804.54/109,500.36
  6. Step 6: Final answer
    x = 85,221.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.