Home / 99,215.78-136,910.70-56,199.60

Finding the Fourth Proportional to 99,215.78, 136,910.70 and 56,199.60

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Solution

The fourth proportional to 99,215.78, 136,910.70 and 56,199.60 is: 77,551.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,215.78 : 136,910.70 = 56,199.60 : x
  2. Step 2: Convert to fraction form
    99,215.78/136,910.70 = 56,199.60/x
  3. Step 3: Cross multiply
    99,215.78x = 136,910.70 × 56,199.60
  4. Step 4: Simplify right side
    99,215.78x = 7,694,326,575.72
  5. Step 5: Solve for x
    x = 7,694,326,575.72/99,215.78
  6. Step 6: Final answer
    x = 77,551.44

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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.