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Finding the Fourth Proportional to 126,455.84, 174,512.60 and 69,870.88

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Solution

The fourth proportional to 126,455.84, 174,512.60 and 69,870.88 is: 96,423.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,455.84 : 174,512.60 = 69,870.88 : x
  2. Step 2: Convert to fraction form
    126,455.84/174,512.60 = 69,870.88/x
  3. Step 3: Cross multiply
    126,455.84x = 174,512.60 × 69,870.88
  4. Step 4: Simplify right side
    126,455.84x = 12,193,348,933.09
  5. Step 5: Solve for x
    x = 12,193,348,933.09/126,455.84
  6. Step 6: Final answer
    x = 96,423.77

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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.