Home / 91,206.39-135,892.23-86,113.41

Finding the Fourth Proportional to 91,206.39, 135,892.23 and 86,113.41

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Solution

The fourth proportional to 91,206.39, 135,892.23 and 86,113.41 is: 128,303.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,206.39 : 135,892.23 = 86,113.41 : x
  2. Step 2: Convert to fraction form
    91,206.39/135,892.23 = 86,113.41/x
  3. Step 3: Cross multiply
    91,206.39x = 135,892.23 × 86,113.41
  4. Step 4: Simplify right side
    91,206.39x = 11,702,143,317.80
  5. Step 5: Solve for x
    x = 11,702,143,317.80/91,206.39
  6. Step 6: Final answer
    x = 128,303.99

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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.