Home / 105,476.60-145,552.13-57,720.73

Finding the Fourth Proportional to 105,476.60, 145,552.13 and 57,720.73

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Solution

The fourth proportional to 105,476.60, 145,552.13 and 57,720.73 is: 79,651.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,476.60 : 145,552.13 = 57,720.73 : x
  2. Step 2: Convert to fraction form
    105,476.60/145,552.13 = 57,720.73/x
  3. Step 3: Cross multiply
    105,476.60x = 145,552.13 × 57,720.73
  4. Step 4: Simplify right side
    105,476.60x = 8,401,374,252.44
  5. Step 5: Solve for x
    x = 8,401,374,252.44/105,476.60
  6. Step 6: Final answer
    x = 79,651.54

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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.