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Finding the Fourth Proportional to 126,963, 175,208.94 and 70,383

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Solution

The fourth proportional to 126,963, 175,208.94 and 70,383 is: 97,128.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,963 : 175,208.94 = 70,383 : x
  2. Step 2: Convert to fraction form
    126,963/175,208.94 = 70,383/x
  3. Step 3: Cross multiply
    126,963x = 175,208.94 × 70,383
  4. Step 4: Simplify right side
    126,963x = 12,331,730,824.02
  5. Step 5: Solve for x
    x = 12,331,730,824.02/126,963
  6. Step 6: Final answer
    x = 97,128.54

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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.