Home / 99,416.12-137,198.02-56,982.84

Finding the Fourth Proportional to 99,416.12, 137,198.02 and 56,982.84

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Solution

The fourth proportional to 99,416.12, 137,198.02 and 56,982.84 is: 78,638.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,416.12 : 137,198.02 = 56,982.84 : x
  2. Step 2: Convert to fraction form
    99,416.12/137,198.02 = 56,982.84/x
  3. Step 3: Cross multiply
    99,416.12x = 137,198.02 × 56,982.84
  4. Step 4: Simplify right side
    99,416.12x = 7,817,932,821.98
  5. Step 5: Solve for x
    x = 7,817,932,821.98/99,416.12
  6. Step 6: Final answer
    x = 78,638.48

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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.