Home / 136,105.79-187,821.06-74,851.45

Finding the Fourth Proportional to 136,105.79, 187,821.06 and 74,851.45

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Solution

The fourth proportional to 136,105.79, 187,821.06 and 74,851.45 is: 103,292.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,105.79 : 187,821.06 = 74,851.45 : x
  2. Step 2: Convert to fraction form
    136,105.79/187,821.06 = 74,851.45/x
  3. Step 3: Cross multiply
    136,105.79x = 187,821.06 × 74,851.45
  4. Step 4: Simplify right side
    136,105.79x = 14,058,678,211.98
  5. Step 5: Solve for x
    x = 14,058,678,211.98/136,105.79
  6. Step 6: Final answer
    x = 103,292.29

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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.