Home / 89,155.84-132,936.68-86,706.40

Finding the Fourth Proportional to 89,155.84, 132,936.68 and 86,706.40

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Solution

The fourth proportional to 89,155.84, 132,936.68 and 86,706.40 is: 129,284.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,155.84 : 132,936.68 = 86,706.40 : x
  2. Step 2: Convert to fraction form
    89,155.84/132,936.68 = 86,706.40/x
  3. Step 3: Cross multiply
    89,155.84x = 132,936.68 × 86,706.40
  4. Step 4: Simplify right side
    89,155.84x = 11,526,460,950.75
  5. Step 5: Solve for x
    x = 11,526,460,950.75/89,155.84
  6. Step 6: Final answer
    x = 129,284.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.