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Finding the Fourth Proportional to 101,097.78, 139,509.78 and 60,803.80

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Solution

The fourth proportional to 101,097.78, 139,509.78 and 60,803.80 is: 83,906.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,097.78 : 139,509.78 = 60,803.80 : x
  2. Step 2: Convert to fraction form
    101,097.78/139,509.78 = 60,803.80/x
  3. Step 3: Cross multiply
    101,097.78x = 139,509.78 × 60,803.80
  4. Step 4: Simplify right side
    101,097.78x = 8,482,724,761.16
  5. Step 5: Solve for x
    x = 8,482,724,761.16/101,097.78
  6. Step 6: Final answer
    x = 83,906.14

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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.