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Finding the Fourth Proportional to 107,401.20, 160,943.40 and 77,881.20

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Solution

The fourth proportional to 107,401.20, 160,943.40 and 77,881.20 is: 116,706.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,401.20 : 160,943.40 = 77,881.20 : x
  2. Step 2: Convert to fraction form
    107,401.20/160,943.40 = 77,881.20/x
  3. Step 3: Cross multiply
    107,401.20x = 160,943.40 × 77,881.20
  4. Step 4: Simplify right side
    107,401.20x = 12,534,465,124.08
  5. Step 5: Solve for x
    x = 12,534,465,124.08/107,401.20
  6. Step 6: Final answer
    x = 116,706.94

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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.