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Finding the Fourth Proportional to 210,158.20, 290,018.22 and 134,706.64

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Solution

The fourth proportional to 210,158.20, 290,018.22 and 134,706.64 is: 185,895.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,158.20 : 290,018.22 = 134,706.64 : x
  2. Step 2: Convert to fraction form
    210,158.20/290,018.22 = 134,706.64/x
  3. Step 3: Cross multiply
    210,158.20x = 290,018.22 × 134,706.64
  4. Step 4: Simplify right side
    210,158.20x = 39,067,379,954.98
  5. Step 5: Solve for x
    x = 39,067,379,954.98/210,158.20
  6. Step 6: Final answer
    x = 185,895.10

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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.