Home / 85,256.96-117,617.28-81,304.16

Finding the Fourth Proportional to 85,256.96, 117,617.28 and 81,304.16

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Solution

The fourth proportional to 85,256.96, 117,617.28 and 81,304.16 is: 112,164.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,256.96 : 117,617.28 = 81,304.16 : x
  2. Step 2: Convert to fraction form
    85,256.96/117,617.28 = 81,304.16/x
  3. Step 3: Cross multiply
    85,256.96x = 117,617.28 × 81,304.16
  4. Step 4: Simplify right side
    85,256.96x = 9,562,774,151.88
  5. Step 5: Solve for x
    x = 9,562,774,151.88/85,256.96
  6. Step 6: Final answer
    x = 112,164.15

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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.