Home / 187,128.39-258,234.15-102,243.63

Finding the Fourth Proportional to 187,128.39, 258,234.15 and 102,243.63

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Solution

The fourth proportional to 187,128.39, 258,234.15 and 102,243.63 is: 141,094.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,128.39 : 258,234.15 = 102,243.63 : x
  2. Step 2: Convert to fraction form
    187,128.39/258,234.15 = 102,243.63/x
  3. Step 3: Cross multiply
    187,128.39x = 258,234.15 × 102,243.63
  4. Step 4: Simplify right side
    187,128.39x = 26,402,796,885.96
  5. Step 5: Solve for x
    x = 26,402,796,885.96/187,128.39
  6. Step 6: Final answer
    x = 141,094.55

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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.