Home / 149,116.32-205,786.16-85,466.40

Finding the Fourth Proportional to 149,116.32, 205,786.16 and 85,466.40

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Solution

The fourth proportional to 149,116.32, 205,786.16 and 85,466.40 is: 117,946.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,116.32 : 205,786.16 = 85,466.40 : x
  2. Step 2: Convert to fraction form
    149,116.32/205,786.16 = 85,466.40/x
  3. Step 3: Cross multiply
    149,116.32x = 205,786.16 × 85,466.40
  4. Step 4: Simplify right side
    149,116.32x = 17,587,802,265.02
  5. Step 5: Solve for x
    x = 17,587,802,265.02/149,116.32
  6. Step 6: Final answer
    x = 117,946.86

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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.