Home / 105,551.22-145,660.91-57,153.68

Finding the Fourth Proportional to 105,551.22, 145,660.91 and 57,153.68

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Solution

The fourth proportional to 105,551.22, 145,660.91 and 57,153.68 is: 78,872.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,551.22 : 145,660.91 = 57,153.68 : x
  2. Step 2: Convert to fraction form
    105,551.22/145,660.91 = 57,153.68/x
  3. Step 3: Cross multiply
    105,551.22x = 145,660.91 × 57,153.68
  4. Step 4: Simplify right side
    105,551.22x = 8,325,056,024.58
  5. Step 5: Solve for x
    x = 8,325,056,024.58/105,551.22
  6. Step 6: Final answer
    x = 78,872.19

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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.