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Finding the Fourth Proportional to 201,617.60, 302,134.80 and 89,205.80

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Solution

The fourth proportional to 201,617.60, 302,134.80 and 89,205.80 is: 133,679.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,617.60 : 302,134.80 = 89,205.80 : x
  2. Step 2: Convert to fraction form
    201,617.60/302,134.80 = 89,205.80/x
  3. Step 3: Cross multiply
    201,617.60x = 302,134.80 × 89,205.80
  4. Step 4: Simplify right side
    201,617.60x = 26,952,176,541.84
  5. Step 5: Solve for x
    x = 26,952,176,541.84/201,617.60
  6. Step 6: Final answer
    x = 133,679.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.