Home / 107,930.20-161,895.30-76,437.40

Finding the Fourth Proportional to 107,930.20, 161,895.30 and 76,437.40

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Solution

The fourth proportional to 107,930.20, 161,895.30 and 76,437.40 is: 114,656.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,930.20 : 161,895.30 = 76,437.40 : x
  2. Step 2: Convert to fraction form
    107,930.20/161,895.30 = 76,437.40/x
  3. Step 3: Cross multiply
    107,930.20x = 161,895.30 × 76,437.40
  4. Step 4: Simplify right side
    107,930.20x = 12,374,855,804.22
  5. Step 5: Solve for x
    x = 12,374,855,804.22/107,930.20
  6. Step 6: Final answer
    x = 114,656.10

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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.