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Finding the Fourth Proportional to 81,968.20, 122,952.30 and 73,673.80

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Solution

The fourth proportional to 81,968.20, 122,952.30 and 73,673.80 is: 110,510.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,968.20 : 122,952.30 = 73,673.80 : x
  2. Step 2: Convert to fraction form
    81,968.20/122,952.30 = 73,673.80/x
  3. Step 3: Cross multiply
    81,968.20x = 122,952.30 × 73,673.80
  4. Step 4: Simplify right side
    81,968.20x = 9,058,363,159.74
  5. Step 5: Solve for x
    x = 9,058,363,159.74/81,968.20
  6. Step 6: Final answer
    x = 110,510.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.