Home / 187,128.16-258,233.82-102,243.40

Finding the Fourth Proportional to 187,128.16, 258,233.82 and 102,243.40

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Solution

The fourth proportional to 187,128.16, 258,233.82 and 102,243.40 is: 141,094.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,128.16 : 258,233.82 = 102,243.40 : x
  2. Step 2: Convert to fraction form
    187,128.16/258,233.82 = 102,243.40/x
  3. Step 3: Cross multiply
    187,128.16x = 258,233.82 × 102,243.40
  4. Step 4: Simplify right side
    187,128.16x = 26,402,703,751.79
  5. Step 5: Solve for x
    x = 26,402,703,751.79/187,128.16
  6. Step 6: Final answer
    x = 141,094.23

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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.