Home / 109,333.20-164,064.60-72,000.30

Finding the Fourth Proportional to 109,333.20, 164,064.60 and 72,000.30

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Solution

The fourth proportional to 109,333.20, 164,064.60 and 72,000.30 is: 108,043.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,333.20 : 164,064.60 = 72,000.30 : x
  2. Step 2: Convert to fraction form
    109,333.20/164,064.60 = 72,000.30/x
  3. Step 3: Cross multiply
    109,333.20x = 164,064.60 × 72,000.30
  4. Step 4: Simplify right side
    109,333.20x = 11,812,700,419.38
  5. Step 5: Solve for x
    x = 11,812,700,419.38/109,333.20
  6. Step 6: Final answer
    x = 108,043.12

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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.