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Finding the Fourth Proportional to 187,423.76, 258,651 and 102,540.86

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Solution

The fourth proportional to 187,423.76, 258,651 and 102,540.86 is: 141,509.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,423.76 : 258,651 = 102,540.86 : x
  2. Step 2: Convert to fraction form
    187,423.76/258,651 = 102,540.86/x
  3. Step 3: Cross multiply
    187,423.76x = 258,651 × 102,540.86
  4. Step 4: Simplify right side
    187,423.76x = 26,522,295,979.86
  5. Step 5: Solve for x
    x = 26,522,295,979.86/187,423.76
  6. Step 6: Final answer
    x = 141,509.78

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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.