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Finding the Fourth Proportional to 133,072.40, 183,624.36 and 79,360.40

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Solution

The fourth proportional to 133,072.40, 183,624.36 and 79,360.40 is: 109,508.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,072.40 : 183,624.36 = 79,360.40 : x
  2. Step 2: Convert to fraction form
    133,072.40/183,624.36 = 79,360.40/x
  3. Step 3: Cross multiply
    133,072.40x = 183,624.36 × 79,360.40
  4. Step 4: Simplify right side
    133,072.40x = 14,572,502,659.34
  5. Step 5: Solve for x
    x = 14,572,502,659.34/133,072.40
  6. Step 6: Final answer
    x = 109,508.08

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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.