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Finding the Fourth Proportional to 154,033.65, 212,570.46 and 86,047.92

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Solution

The fourth proportional to 154,033.65, 212,570.46 and 86,047.92 is: 118,748.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,033.65 : 212,570.46 = 86,047.92 : x
  2. Step 2: Convert to fraction form
    154,033.65/212,570.46 = 86,047.92/x
  3. Step 3: Cross multiply
    154,033.65x = 212,570.46 × 86,047.92
  4. Step 4: Simplify right side
    154,033.65x = 18,291,245,936.44
  5. Step 5: Solve for x
    x = 18,291,245,936.44/154,033.65
  6. Step 6: Final answer
    x = 118,748.38

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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.