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Finding the Fourth Proportional to 133,987.80, 201,095.10 and 55,158.60

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Solution

The fourth proportional to 133,987.80, 201,095.10 and 55,158.60 is: 82,784.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,987.80 : 201,095.10 = 55,158.60 : x
  2. Step 2: Convert to fraction form
    133,987.80/201,095.10 = 55,158.60/x
  3. Step 3: Cross multiply
    133,987.80x = 201,095.10 × 55,158.60
  4. Step 4: Simplify right side
    133,987.80x = 11,092,124,182.86
  5. Step 5: Solve for x
    x = 11,092,124,182.86/133,987.80
  6. Step 6: Final answer
    x = 82,784.58

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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.