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Finding the Fourth Proportional to 107,518.80, 161,083.80 and 91,966.80

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Solution

The fourth proportional to 107,518.80, 161,083.80 and 91,966.80 is: 137,783.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,518.80 : 161,083.80 = 91,966.80 : x
  2. Step 2: Convert to fraction form
    107,518.80/161,083.80 = 91,966.80/x
  3. Step 3: Cross multiply
    107,518.80x = 161,083.80 × 91,966.80
  4. Step 4: Simplify right side
    107,518.80x = 14,814,361,617.84
  5. Step 5: Solve for x
    x = 14,814,361,617.84/107,518.80
  6. Step 6: Final answer
    x = 137,783.92

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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.