Home / 133,072.12-183,670.40-87,758.28

Finding the Fourth Proportional to 133,072.12, 183,670.40 and 87,758.28

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Solution

The fourth proportional to 133,072.12, 183,670.40 and 87,758.28 is: 121,126.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,072.12 : 183,670.40 = 87,758.28 : x
  2. Step 2: Convert to fraction form
    133,072.12/183,670.40 = 87,758.28/x
  3. Step 3: Cross multiply
    133,072.12x = 183,670.40 × 87,758.28
  4. Step 4: Simplify right side
    133,072.12x = 16,118,598,390.91
  5. Step 5: Solve for x
    x = 16,118,598,390.91/133,072.12
  6. Step 6: Final answer
    x = 121,126.79

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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.