Home / 187,973.12-281,857.92-86,661.76

Finding the Fourth Proportional to 187,973.12, 281,857.92 and 86,661.76

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Solution

The fourth proportional to 187,973.12, 281,857.92 and 86,661.76 is: 129,945.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,973.12 : 281,857.92 = 86,661.76 : x
  2. Step 2: Convert to fraction form
    187,973.12/281,857.92 = 86,661.76/x
  3. Step 3: Cross multiply
    187,973.12x = 281,857.92 × 86,661.76
  4. Step 4: Simplify right side
    187,973.12x = 24,426,303,417.14
  5. Step 5: Solve for x
    x = 24,426,303,417.14/187,973.12
  6. Step 6: Final answer
    x = 129,945.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.