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Finding the Fourth Proportional to 154,020.47, 212,548.25 and 86,952.47

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Solution

The fourth proportional to 154,020.47, 212,548.25 and 86,952.47 is: 119,994.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,020.47 : 212,548.25 = 86,952.47 : x
  2. Step 2: Convert to fraction form
    154,020.47/212,548.25 = 86,952.47/x
  3. Step 3: Cross multiply
    154,020.47x = 212,548.25 × 86,952.47
  4. Step 4: Simplify right side
    154,020.47x = 18,481,593,834.17
  5. Step 5: Solve for x
    x = 18,481,593,834.17/154,020.47
  6. Step 6: Final answer
    x = 119,994.40

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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.