Home / 189,569.24-261,681.88-129,200.90

Finding the Fourth Proportional to 189,569.24, 261,681.88 and 129,200.90

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Solution

The fourth proportional to 189,569.24, 261,681.88 and 129,200.90 is: 178,349.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,569.24 : 261,681.88 = 129,200.90 : x
  2. Step 2: Convert to fraction form
    189,569.24/261,681.88 = 129,200.90/x
  3. Step 3: Cross multiply
    189,569.24x = 261,681.88 × 129,200.90
  4. Step 4: Simplify right side
    189,569.24x = 33,809,534,409.69
  5. Step 5: Solve for x
    x = 33,809,534,409.69/189,569.24
  6. Step 6: Final answer
    x = 178,349.26

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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.