Home / 137,522.16-189,796.32-77,109.12

Finding the Fourth Proportional to 137,522.16, 189,796.32 and 77,109.12

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Solution

The fourth proportional to 137,522.16, 189,796.32 and 77,109.12 is: 106,419.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,522.16 : 189,796.32 = 77,109.12 : x
  2. Step 2: Convert to fraction form
    137,522.16/189,796.32 = 77,109.12/x
  3. Step 3: Cross multiply
    137,522.16x = 189,796.32 × 77,109.12
  4. Step 4: Simplify right side
    137,522.16x = 14,635,027,214.44
  5. Step 5: Solve for x
    x = 14,635,027,214.44/137,522.16
  6. Step 6: Final answer
    x = 106,419.41

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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.