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Finding the Fourth Proportional to 154,293.84, 212,915.46 and 86,299.04

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Solution

The fourth proportional to 154,293.84, 212,915.46 and 86,299.04 is: 119,087.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,293.84 : 212,915.46 = 86,299.04 : x
  2. Step 2: Convert to fraction form
    154,293.84/212,915.46 = 86,299.04/x
  3. Step 3: Cross multiply
    154,293.84x = 212,915.46 × 86,299.04
  4. Step 4: Simplify right side
    154,293.84x = 18,374,398,734.58
  5. Step 5: Solve for x
    x = 18,374,398,734.58/154,293.84
  6. Step 6: Final answer
    x = 119,087.05

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1.5x scale

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.