Home / 149,728.50-206,601.84-86,054.40

Finding the Fourth Proportional to 149,728.50, 206,601.84 and 86,054.40

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Solution

The fourth proportional to 149,728.50, 206,601.84 and 86,054.40 is: 118,741.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,728.50 : 206,601.84 = 86,054.40 : x
  2. Step 2: Convert to fraction form
    149,728.50/206,601.84 = 86,054.40/x
  3. Step 3: Cross multiply
    149,728.50x = 206,601.84 × 86,054.40
  4. Step 4: Simplify right side
    149,728.50x = 17,778,997,380.10
  5. Step 5: Solve for x
    x = 17,778,997,380.10/149,728.50
  6. Step 6: Final answer
    x = 118,741.57

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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.