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Finding the Fourth Proportional to 104,783.98, 157,208.79 and 67,386.28

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Solution

The fourth proportional to 104,783.98, 157,208.79 and 67,386.28 is: 101,100.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,783.98 : 157,208.79 = 67,386.28 : x
  2. Step 2: Convert to fraction form
    104,783.98/157,208.79 = 67,386.28/x
  3. Step 3: Cross multiply
    104,783.98x = 157,208.79 × 67,386.28
  4. Step 4: Simplify right side
    104,783.98x = 10,593,715,541.40
  5. Step 5: Solve for x
    x = 10,593,715,541.40/104,783.98
  6. Step 6: Final answer
    x = 101,100.53

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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.