Home / 115,639.67-159,583.01-64,654.22

Finding the Fourth Proportional to 115,639.67, 159,583.01 and 64,654.22

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Solution

The fourth proportional to 115,639.67, 159,583.01 and 64,654.22 is: 89,222.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,639.67 : 159,583.01 = 64,654.22 : x
  2. Step 2: Convert to fraction form
    115,639.67/159,583.01 = 64,654.22/x
  3. Step 3: Cross multiply
    115,639.67x = 159,583.01 × 64,654.22
  4. Step 4: Simplify right side
    115,639.67x = 10,317,713,915.62
  5. Step 5: Solve for x
    x = 10,317,713,915.62/115,639.67
  6. Step 6: Final answer
    x = 89,222.97

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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.