Home / 189,606.40-261,646.32-117,984.16

Finding the Fourth Proportional to 189,606.40, 261,646.32 and 117,984.16

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Solution

The fourth proportional to 189,606.40, 261,646.32 and 117,984.16 is: 162,811.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,606.40 : 261,646.32 = 117,984.16 : x
  2. Step 2: Convert to fraction form
    189,606.40/261,646.32 = 117,984.16/x
  3. Step 3: Cross multiply
    189,606.40x = 261,646.32 × 117,984.16
  4. Step 4: Simplify right side
    189,606.40x = 30,870,121,282.29
  5. Step 5: Solve for x
    x = 30,870,121,282.29/189,606.40
  6. Step 6: Final answer
    x = 162,811.60

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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.