Home / 187,981.70-259,433.69-107,421.12

Finding the Fourth Proportional to 187,981.70, 259,433.69 and 107,421.12

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Solution

The fourth proportional to 187,981.70, 259,433.69 and 107,421.12 is: 148,251.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,981.70 : 259,433.69 = 107,421.12 : x
  2. Step 2: Convert to fraction form
    187,981.70/259,433.69 = 107,421.12/x
  3. Step 3: Cross multiply
    187,981.70x = 259,433.69 × 107,421.12
  4. Step 4: Simplify right side
    187,981.70x = 27,868,657,008.43
  5. Step 5: Solve for x
    x = 27,868,657,008.43/187,981.70
  6. Step 6: Final answer
    x = 148,251.97

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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.