Home / 103,204.07-142,427.37-77,664.50

Finding the Fourth Proportional to 103,204.07, 142,427.37 and 77,664.50

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Solution

The fourth proportional to 103,204.07, 142,427.37 and 77,664.50 is: 107,181.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,204.07 : 142,427.37 = 77,664.50 : x
  2. Step 2: Convert to fraction form
    103,204.07/142,427.37 = 77,664.50/x
  3. Step 3: Cross multiply
    103,204.07x = 142,427.37 × 77,664.50
  4. Step 4: Simplify right side
    103,204.07x = 11,061,550,477.37
  5. Step 5: Solve for x
    x = 11,061,550,477.37/103,204.07
  6. Step 6: Final answer
    x = 107,181.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.