Home / 109,707.40-164,233.05-103,219.30

Finding the Fourth Proportional to 109,707.40, 164,233.05 and 103,219.30

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Solution

The fourth proportional to 109,707.40, 164,233.05 and 103,219.30 is: 154,520.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,707.40 : 164,233.05 = 103,219.30 : x
  2. Step 2: Convert to fraction form
    109,707.40/164,233.05 = 103,219.30/x
  3. Step 3: Cross multiply
    109,707.40x = 164,233.05 × 103,219.30
  4. Step 4: Simplify right side
    109,707.40x = 16,952,020,457.87
  5. Step 5: Solve for x
    x = 16,952,020,457.87/109,707.40
  6. Step 6: Final answer
    x = 154,520.30

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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.