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Finding the Fourth Proportional to 112,841.70, 155,714.36 and 61,845.42

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Solution

The fourth proportional to 112,841.70, 155,714.36 and 61,845.42 is: 85,342.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,841.70 : 155,714.36 = 61,845.42 : x
  2. Step 2: Convert to fraction form
    112,841.70/155,714.36 = 61,845.42/x
  3. Step 3: Cross multiply
    112,841.70x = 155,714.36 × 61,845.42
  4. Step 4: Simplify right side
    112,841.70x = 9,630,219,994.23
  5. Step 5: Solve for x
    x = 9,630,219,994.23/112,841.70
  6. Step 6: Final answer
    x = 85,342.74

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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.