Home / 112,188.96-154,771.64-71,331.20

Finding the Fourth Proportional to 112,188.96, 154,771.64 and 71,331.20

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Solution

The fourth proportional to 112,188.96, 154,771.64 and 71,331.20 is: 98,405.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,188.96 : 154,771.64 = 71,331.20 : x
  2. Step 2: Convert to fraction form
    112,188.96/154,771.64 = 71,331.20/x
  3. Step 3: Cross multiply
    112,188.96x = 154,771.64 × 71,331.20
  4. Step 4: Simplify right side
    112,188.96x = 11,040,046,807.17
  5. Step 5: Solve for x
    x = 11,040,046,807.17/112,188.96
  6. Step 6: Final answer
    x = 98,405.82

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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.