Home / 136,223.74-187,993.20-85,220.17

Finding the Fourth Proportional to 136,223.74, 187,993.20 and 85,220.17

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Solution

The fourth proportional to 136,223.74, 187,993.20 and 85,220.17 is: 117,606.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,223.74 : 187,993.20 = 85,220.17 : x
  2. Step 2: Convert to fraction form
    136,223.74/187,993.20 = 85,220.17/x
  3. Step 3: Cross multiply
    136,223.74x = 187,993.20 × 85,220.17
  4. Step 4: Simplify right side
    136,223.74x = 16,020,812,312.44
  5. Step 5: Solve for x
    x = 16,020,812,312.44/136,223.74
  6. Step 6: Final answer
    x = 117,606.61

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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.