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Finding the Fourth Proportional to 126,792, 174,978.45 and 70,203.38

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Solution

The fourth proportional to 126,792, 174,978.45 and 70,203.38 is: 96,883.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,792 : 174,978.45 = 70,203.38 : x
  2. Step 2: Convert to fraction form
    126,792/174,978.45 = 70,203.38/x
  3. Step 3: Cross multiply
    126,792x = 174,978.45 × 70,203.38
  4. Step 4: Simplify right side
    126,792x = 12,284,077,742.27
  5. Step 5: Solve for x
    x = 12,284,077,742.27/126,792
  6. Step 6: Final answer
    x = 96,883.70

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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.