Home / 149,016.08-205,657.80-85,342.16

Finding the Fourth Proportional to 149,016.08, 205,657.80 and 85,342.16

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Solution

The fourth proportional to 149,016.08, 205,657.80 and 85,342.16 is: 117,781.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,016.08 : 205,657.80 = 85,342.16 : x
  2. Step 2: Convert to fraction form
    149,016.08/205,657.80 = 85,342.16/x
  3. Step 3: Cross multiply
    149,016.08x = 205,657.80 × 85,342.16
  4. Step 4: Simplify right side
    149,016.08x = 17,551,280,872.85
  5. Step 5: Solve for x
    x = 17,551,280,872.85/149,016.08
  6. Step 6: Final answer
    x = 117,781.12

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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.