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Finding the Fourth Proportional to 148,934.40, 223,401.60 and 55,420.80

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Solution

The fourth proportional to 148,934.40, 223,401.60 and 55,420.80 is: 83,131.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,934.40 : 223,401.60 = 55,420.80 : x
  2. Step 2: Convert to fraction form
    148,934.40/223,401.60 = 55,420.80/x
  3. Step 3: Cross multiply
    148,934.40x = 223,401.60 × 55,420.80
  4. Step 4: Simplify right side
    148,934.40x = 12,381,095,393.28
  5. Step 5: Solve for x
    x = 12,381,095,393.28/148,934.40
  6. Step 6: Final answer
    x = 83,131.20

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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.