Home / 109,520.63-151,143.74-61,772.88

Finding the Fourth Proportional to 109,520.63, 151,143.74 and 61,772.88

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Solution

The fourth proportional to 109,520.63, 151,143.74 and 61,772.88 is: 85,249.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,520.63 : 151,143.74 = 61,772.88 : x
  2. Step 2: Convert to fraction form
    109,520.63/151,143.74 = 61,772.88/x
  3. Step 3: Cross multiply
    109,520.63x = 151,143.74 × 61,772.88
  4. Step 4: Simplify right side
    109,520.63x = 9,336,584,113.77
  5. Step 5: Solve for x
    x = 9,336,584,113.77/109,520.63
  6. Step 6: Final answer
    x = 85,249.55

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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.