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Finding the Fourth Proportional to 154,272.39, 212,893.07 and 87,204.39

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Solution

The fourth proportional to 154,272.39, 212,893.07 and 87,204.39 is: 120,340.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,272.39 : 212,893.07 = 87,204.39 : x
  2. Step 2: Convert to fraction form
    154,272.39/212,893.07 = 87,204.39/x
  3. Step 3: Cross multiply
    154,272.39x = 212,893.07 × 87,204.39
  4. Step 4: Simplify right side
    154,272.39x = 18,565,210,304.58
  5. Step 5: Solve for x
    x = 18,565,210,304.58/154,272.39
  6. Step 6: Final answer
    x = 120,340.46

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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.