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Finding the Fourth Proportional to 116,876.80, 175,401.60 and 77,420.80

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Solution

The fourth proportional to 116,876.80, 175,401.60 and 77,420.80 is: 116,188.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,876.80 : 175,401.60 = 77,420.80 : x
  2. Step 2: Convert to fraction form
    116,876.80/175,401.60 = 77,420.80/x
  3. Step 3: Cross multiply
    116,876.80x = 175,401.60 × 77,420.80
  4. Step 4: Simplify right side
    116,876.80x = 13,579,732,193.28
  5. Step 5: Solve for x
    x = 13,579,732,193.28/116,876.80
  6. Step 6: Final answer
    x = 116,188.43

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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.