Home / 109,403.10-164,104.65-89,703.90

Finding the Fourth Proportional to 109,403.10, 164,104.65 and 89,703.90

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Solution

The fourth proportional to 109,403.10, 164,104.65 and 89,703.90 is: 134,555.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,403.10 : 164,104.65 = 89,703.90 : x
  2. Step 2: Convert to fraction form
    109,403.10/164,104.65 = 89,703.90/x
  3. Step 3: Cross multiply
    109,403.10x = 164,104.65 × 89,703.90
  4. Step 4: Simplify right side
    109,403.10x = 14,720,827,113.14
  5. Step 5: Solve for x
    x = 14,720,827,113.14/109,403.10
  6. Step 6: Final answer
    x = 134,555.85

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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.