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Finding the Fourth Proportional to 126,790.71, 174,970.90 and 73,075.35

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Solution

The fourth proportional to 126,790.71, 174,970.90 and 73,075.35 is: 100,843.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,790.71 : 174,970.90 = 73,075.35 : x
  2. Step 2: Convert to fraction form
    126,790.71/174,970.90 = 73,075.35/x
  3. Step 3: Cross multiply
    126,790.71x = 174,970.90 × 73,075.35
  4. Step 4: Simplify right side
    126,790.71x = 12,786,059,757.32
  5. Step 5: Solve for x
    x = 12,786,059,757.32/126,790.71
  6. Step 6: Final answer
    x = 100,843.82

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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.