Home / 103,660.17-143,052.05-57,720.46

Finding the Fourth Proportional to 103,660.17, 143,052.05 and 57,720.46

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Solution

The fourth proportional to 103,660.17, 143,052.05 and 57,720.46 is: 79,654.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,660.17 : 143,052.05 = 57,720.46 : x
  2. Step 2: Convert to fraction form
    103,660.17/143,052.05 = 57,720.46/x
  3. Step 3: Cross multiply
    103,660.17x = 143,052.05 × 57,720.46
  4. Step 4: Simplify right side
    103,660.17x = 8,257,029,772.31
  5. Step 5: Solve for x
    x = 8,257,029,772.31/103,660.17
  6. Step 6: Final answer
    x = 79,654.80

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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.