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Finding the Fourth Proportional to 133,626.60, 184,420.26 and 77,040

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Solution

The fourth proportional to 133,626.60, 184,420.26 and 77,040 is: 106,324.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,626.60 : 184,420.26 = 77,040 : x
  2. Step 2: Convert to fraction form
    133,626.60/184,420.26 = 77,040/x
  3. Step 3: Cross multiply
    133,626.60x = 184,420.26 × 77,040
  4. Step 4: Simplify right side
    133,626.60x = 14,207,736,830.40
  5. Step 5: Solve for x
    x = 14,207,736,830.40/133,626.60
  6. Step 6: Final answer
    x = 106,324.17

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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.