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Finding the Fourth Proportional to 107,122.69, 160,800.81 and 78,955.48

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Solution

The fourth proportional to 107,122.69, 160,800.81 and 78,955.48 is: 118,519.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,122.69 : 160,800.81 = 78,955.48 : x
  2. Step 2: Convert to fraction form
    107,122.69/160,800.81 = 78,955.48/x
  3. Step 3: Cross multiply
    107,122.69x = 160,800.81 × 78,955.48
  4. Step 4: Simplify right side
    107,122.69x = 12,696,105,137.94
  5. Step 5: Solve for x
    x = 12,696,105,137.94/107,122.69
  6. Step 6: Final answer
    x = 118,519.29

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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.