Home / 109,729.90-164,496.30-43,215.40

Finding the Fourth Proportional to 109,729.90, 164,496.30 and 43,215.40

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Solution

The fourth proportional to 109,729.90, 164,496.30 and 43,215.40 is: 64,784.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,729.90 : 164,496.30 = 43,215.40 : x
  2. Step 2: Convert to fraction form
    109,729.90/164,496.30 = 43,215.40/x
  3. Step 3: Cross multiply
    109,729.90x = 164,496.30 × 43,215.40
  4. Step 4: Simplify right side
    109,729.90x = 7,108,773,403.02
  5. Step 5: Solve for x
    x = 7,108,773,403.02/109,729.90
  6. Step 6: Final answer
    x = 64,784.29

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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.