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Finding the Fourth Proportional to 154,559.34, 231,921.09 and 61,065.90

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Solution

The fourth proportional to 154,559.34, 231,921.09 and 61,065.90 is: 91,631.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,559.34 : 231,921.09 = 61,065.90 : x
  2. Step 2: Convert to fraction form
    154,559.34/231,921.09 = 61,065.90/x
  3. Step 3: Cross multiply
    154,559.34x = 231,921.09 × 61,065.90
  4. Step 4: Simplify right side
    154,559.34x = 14,162,470,089.83
  5. Step 5: Solve for x
    x = 14,162,470,089.83/154,559.34
  6. Step 6: Final answer
    x = 91,631.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.