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Finding the Fourth Proportional to 133,187.40, 183,798.90 and 72,758.52

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Solution

The fourth proportional to 133,187.40, 183,798.90 and 72,758.52 is: 100,406.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,187.40 : 183,798.90 = 72,758.52 : x
  2. Step 2: Convert to fraction form
    133,187.40/183,798.90 = 72,758.52/x
  3. Step 3: Cross multiply
    133,187.40x = 183,798.90 × 72,758.52
  4. Step 4: Simplify right side
    133,187.40x = 13,372,935,941.63
  5. Step 5: Solve for x
    x = 13,372,935,941.63/133,187.40
  6. Step 6: Final answer
    x = 100,406.91

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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.