Home / 109,870.20-164,805.30-74,878.20

Finding the Fourth Proportional to 109,870.20, 164,805.30 and 74,878.20

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Solution

The fourth proportional to 109,870.20, 164,805.30 and 74,878.20 is: 112,317.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,870.20 : 164,805.30 = 74,878.20 : x
  2. Step 2: Convert to fraction form
    109,870.20/164,805.30 = 74,878.20/x
  3. Step 3: Cross multiply
    109,870.20x = 164,805.30 × 74,878.20
  4. Step 4: Simplify right side
    109,870.20x = 12,340,324,214.46
  5. Step 5: Solve for x
    x = 12,340,324,214.46/109,870.20
  6. Step 6: Final answer
    x = 112,317.30

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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.