Home / 99,810.16-137,765.82-57,382.36

Finding the Fourth Proportional to 99,810.16, 137,765.82 and 57,382.36

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Solution

The fourth proportional to 99,810.16, 137,765.82 and 57,382.36 is: 79,203.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,810.16 : 137,765.82 = 57,382.36 : x
  2. Step 2: Convert to fraction form
    99,810.16/137,765.82 = 57,382.36/x
  3. Step 3: Cross multiply
    99,810.16x = 137,765.82 × 57,382.36
  4. Step 4: Simplify right side
    99,810.16x = 7,905,327,878.94
  5. Step 5: Solve for x
    x = 7,905,327,878.94/99,810.16
  6. Step 6: Final answer
    x = 79,203.64

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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.