Home / 149,738.17-206,656.80-85,223.09

Finding the Fourth Proportional to 149,738.17, 206,656.80 and 85,223.09

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Solution

The fourth proportional to 149,738.17, 206,656.80 and 85,223.09 is: 117,618.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,738.17 : 206,656.80 = 85,223.09 : x
  2. Step 2: Convert to fraction form
    149,738.17/206,656.80 = 85,223.09/x
  3. Step 3: Cross multiply
    149,738.17x = 206,656.80 × 85,223.09
  4. Step 4: Simplify right side
    149,738.17x = 17,611,931,494.26
  5. Step 5: Solve for x
    x = 17,611,931,494.26/149,738.17
  6. Step 6: Final answer
    x = 117,618.18

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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.