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Finding the Fourth Proportional to 126,068.36, 173,978.10 and 69,483.40

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Solution

The fourth proportional to 126,068.36, 173,978.10 and 69,483.40 is: 95,889.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,068.36 : 173,978.10 = 69,483.40 : x
  2. Step 2: Convert to fraction form
    126,068.36/173,978.10 = 69,483.40/x
  3. Step 3: Cross multiply
    126,068.36x = 173,978.10 × 69,483.40
  4. Step 4: Simplify right side
    126,068.36x = 12,088,589,913.54
  5. Step 5: Solve for x
    x = 12,088,589,913.54/126,068.36
  6. Step 6: Final answer
    x = 95,889.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.