Home / 133,470.85-184,389.77-87,639.20

Finding the Fourth Proportional to 133,470.85, 184,389.77 and 87,639.20

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Solution

The fourth proportional to 133,470.85, 184,389.77 and 87,639.20 is: 121,073.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,470.85 : 184,389.77 = 87,639.20 : x
  2. Step 2: Convert to fraction form
    133,470.85/184,389.77 = 87,639.20/x
  3. Step 3: Cross multiply
    133,470.85x = 184,389.77 × 87,639.20
  4. Step 4: Simplify right side
    133,470.85x = 16,159,771,930.98
  5. Step 5: Solve for x
    x = 16,159,771,930.98/133,470.85
  6. Step 6: Final answer
    x = 121,073.42

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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.