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Finding the Fourth Proportional to 126,137.98, 174,069.70 and 69,549.40

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Solution

The fourth proportional to 126,137.98, 174,069.70 and 69,549.40 is: 95,977.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,137.98 : 174,069.70 = 69,549.40 : x
  2. Step 2: Convert to fraction form
    126,137.98/174,069.70 = 69,549.40/x
  3. Step 3: Cross multiply
    126,137.98x = 174,069.70 × 69,549.40
  4. Step 4: Simplify right side
    126,137.98x = 12,106,443,193.18
  5. Step 5: Solve for x
    x = 12,106,443,193.18/126,137.98
  6. Step 6: Final answer
    x = 95,977.78

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1.5x scale

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.