Home / 99,999.12-137,888.82-64,175.52

Finding the Fourth Proportional to 99,999.12, 137,888.82 and 64,175.52

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Solution

The fourth proportional to 99,999.12, 137,888.82 and 64,175.52 is: 88,491.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,999.12 : 137,888.82 = 64,175.52 : x
  2. Step 2: Convert to fraction form
    99,999.12/137,888.82 = 64,175.52/x
  3. Step 3: Cross multiply
    99,999.12x = 137,888.82 × 64,175.52
  4. Step 4: Simplify right side
    99,999.12x = 8,849,086,725.69
  5. Step 5: Solve for x
    x = 8,849,086,725.69/99,999.12
  6. Step 6: Final answer
    x = 88,491.65

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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.