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Finding the Fourth Proportional to 154,237.84, 212,846.73 and 86,254.04

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Solution

The fourth proportional to 154,237.84, 212,846.73 and 86,254.04 is: 119,029.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,237.84 : 212,846.73 = 86,254.04 : x
  2. Step 2: Convert to fraction form
    154,237.84/212,846.73 = 86,254.04/x
  3. Step 3: Cross multiply
    154,237.84x = 212,846.73 × 86,254.04
  4. Step 4: Simplify right side
    154,237.84x = 18,358,890,363.29
  5. Step 5: Solve for x
    x = 18,358,890,363.29/154,237.84
  6. Step 6: Final answer
    x = 119,029.74

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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.