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Finding the Fourth Proportional to 154,153.44, 212,714.64 and 87,085.44

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Solution

The fourth proportional to 154,153.44, 212,714.64 and 87,085.44 is: 120,168.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,153.44 : 212,714.64 = 87,085.44 : x
  2. Step 2: Convert to fraction form
    154,153.44/212,714.64 = 87,085.44/x
  3. Step 3: Cross multiply
    154,153.44x = 212,714.64 × 87,085.44
  4. Step 4: Simplify right side
    154,153.44x = 18,524,348,018.84
  5. Step 5: Solve for x
    x = 18,524,348,018.84/154,153.44
  6. Step 6: Final answer
    x = 120,168.24

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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.