Home / 103,164.39-154,048.03-81,865.35

Finding the Fourth Proportional to 103,164.39, 154,048.03 and 81,865.35

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Solution

The fourth proportional to 103,164.39, 154,048.03 and 81,865.35 is: 122,243.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,164.39 : 154,048.03 = 81,865.35 : x
  2. Step 2: Convert to fraction form
    103,164.39/154,048.03 = 81,865.35/x
  3. Step 3: Cross multiply
    103,164.39x = 154,048.03 × 81,865.35
  4. Step 4: Simplify right side
    103,164.39x = 12,611,195,688.10
  5. Step 5: Solve for x
    x = 12,611,195,688.10/103,164.39
  6. Step 6: Final answer
    x = 122,243.69

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.