Home / 99,538.68-137,339.82-56,508.84

Finding the Fourth Proportional to 99,538.68, 137,339.82 and 56,508.84

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Solution

The fourth proportional to 99,538.68, 137,339.82 and 56,508.84 is: 77,968.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,538.68 : 137,339.82 = 56,508.84 : x
  2. Step 2: Convert to fraction form
    99,538.68/137,339.82 = 56,508.84/x
  3. Step 3: Cross multiply
    99,538.68x = 137,339.82 × 56,508.84
  4. Step 4: Simplify right side
    99,538.68x = 7,760,913,914.01
  5. Step 5: Solve for x
    x = 7,760,913,914.01/99,538.68
  6. Step 6: Final answer
    x = 77,968.82

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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.