Home / 109,622.90-164,434.35-91,908.20

Finding the Fourth Proportional to 109,622.90, 164,434.35 and 91,908.20

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Solution

The fourth proportional to 109,622.90, 164,434.35 and 91,908.20 is: 137,862.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,622.90 : 164,434.35 = 91,908.20 : x
  2. Step 2: Convert to fraction form
    109,622.90/164,434.35 = 91,908.20/x
  3. Step 3: Cross multiply
    109,622.90x = 164,434.35 × 91,908.20
  4. Step 4: Simplify right side
    109,622.90x = 15,112,865,126.67
  5. Step 5: Solve for x
    x = 15,112,865,126.67/109,622.90
  6. Step 6: Final answer
    x = 137,862.30

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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.