Home / 189,333.92-261,214.64-121,388.32

Finding the Fourth Proportional to 189,333.92, 261,214.64 and 121,388.32

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Solution

The fourth proportional to 189,333.92, 261,214.64 and 121,388.32 is: 167,473.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,333.92 : 261,214.64 = 121,388.32 : x
  2. Step 2: Convert to fraction form
    189,333.92/261,214.64 = 121,388.32/x
  3. Step 3: Cross multiply
    189,333.92x = 261,214.64 × 121,388.32
  4. Step 4: Simplify right side
    189,333.92x = 31,708,406,309.00
  5. Step 5: Solve for x
    x = 31,708,406,309.00/189,333.92
  6. Step 6: Final answer
    x = 167,473.46

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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.