Home / 109,507.86-151,120.44-61,760.91

Finding the Fourth Proportional to 109,507.86, 151,120.44 and 61,760.91

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Solution

The fourth proportional to 109,507.86, 151,120.44 and 61,760.91 is: 85,229.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,507.86 : 151,120.44 = 61,760.91 : x
  2. Step 2: Convert to fraction form
    109,507.86/151,120.44 = 61,760.91/x
  3. Step 3: Cross multiply
    109,507.86x = 151,120.44 × 61,760.91
  4. Step 4: Simplify right side
    109,507.86x = 9,333,335,894.00
  5. Step 5: Solve for x
    x = 9,333,335,894.00/109,507.86
  6. Step 6: Final answer
    x = 85,229.83

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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.