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Finding the Fourth Proportional to 121,477.78, 182,384.34 and 83,945.35

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Solution

The fourth proportional to 121,477.78, 182,384.34 and 83,945.35 is: 126,033.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,477.78 : 182,384.34 = 83,945.35 : x
  2. Step 2: Convert to fraction form
    121,477.78/182,384.34 = 83,945.35/x
  3. Step 3: Cross multiply
    121,477.78x = 182,384.34 × 83,945.35
  4. Step 4: Simplify right side
    121,477.78x = 15,310,317,255.82
  5. Step 5: Solve for x
    x = 15,310,317,255.82/121,477.78
  6. Step 6: Final answer
    x = 126,033.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.