Home / 99,406.56-137,128.80-59,091.66

Finding the Fourth Proportional to 99,406.56, 137,128.80 and 59,091.66

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Solution

The fourth proportional to 99,406.56, 137,128.80 and 59,091.66 is: 81,515.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,406.56 : 137,128.80 = 59,091.66 : x
  2. Step 2: Convert to fraction form
    99,406.56/137,128.80 = 59,091.66/x
  3. Step 3: Cross multiply
    99,406.56x = 137,128.80 × 59,091.66
  4. Step 4: Simplify right side
    99,406.56x = 8,103,168,425.81
  5. Step 5: Solve for x
    x = 8,103,168,425.81/99,406.56
  6. Step 6: Final answer
    x = 81,515.43

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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.