Home / 157,400.06-217,205.75-85,778.55

Finding the Fourth Proportional to 157,400.06, 217,205.75 and 85,778.55

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Solution

The fourth proportional to 157,400.06, 217,205.75 and 85,778.55 is: 118,370.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,400.06 : 217,205.75 = 85,778.55 : x
  2. Step 2: Convert to fraction form
    157,400.06/217,205.75 = 85,778.55/x
  3. Step 3: Cross multiply
    157,400.06x = 217,205.75 × 85,778.55
  4. Step 4: Simplify right side
    157,400.06x = 18,631,593,857.77
  5. Step 5: Solve for x
    x = 18,631,593,857.77/157,400.06
  6. Step 6: Final answer
    x = 118,370.95

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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.