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Finding the Fourth Proportional to 154,101.58, 212,664.39 and 87,033.58

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Solution

The fourth proportional to 154,101.58, 212,664.39 and 87,033.58 is: 120,108.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,101.58 : 212,664.39 = 87,033.58 : x
  2. Step 2: Convert to fraction form
    154,101.58/212,664.39 = 87,033.58/x
  3. Step 3: Cross multiply
    154,101.58x = 212,664.39 × 87,033.58
  4. Step 4: Simplify right side
    154,101.58x = 18,508,943,200.22
  5. Step 5: Solve for x
    x = 18,508,943,200.22/154,101.58
  6. Step 6: Final answer
    x = 120,108.72

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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.