Home / 109,425.21-164,137.75-84,501.60

Finding the Fourth Proportional to 109,425.21, 164,137.75 and 84,501.60

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Solution

The fourth proportional to 109,425.21, 164,137.75 and 84,501.60 is: 126,752.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,425.21 : 164,137.75 = 84,501.60 : x
  2. Step 2: Convert to fraction form
    109,425.21/164,137.75 = 84,501.60/x
  3. Step 3: Cross multiply
    109,425.21x = 164,137.75 × 84,501.60
  4. Step 4: Simplify right side
    109,425.21x = 13,869,902,495.40
  5. Step 5: Solve for x
    x = 13,869,902,495.40/109,425.21
  6. Step 6: Final answer
    x = 126,752.35

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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.