Home / 113,772.60-170,270.10-99,775.80

Finding the Fourth Proportional to 113,772.60, 170,270.10 and 99,775.80

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Solution

The fourth proportional to 113,772.60, 170,270.10 and 99,775.80 is: 149,322.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,772.60 : 170,270.10 = 99,775.80 : x
  2. Step 2: Convert to fraction form
    113,772.60/170,270.10 = 99,775.80/x
  3. Step 3: Cross multiply
    113,772.60x = 170,270.10 × 99,775.80
  4. Step 4: Simplify right side
    113,772.60x = 16,988,835,443.58
  5. Step 5: Solve for x
    x = 16,988,835,443.58/113,772.60
  6. Step 6: Final answer
    x = 149,322.73

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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.