Home / 189,146.54-261,019.02-103,106.48

Finding the Fourth Proportional to 189,146.54, 261,019.02 and 103,106.48

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Solution

The fourth proportional to 189,146.54, 261,019.02 and 103,106.48 is: 142,285.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,146.54 : 261,019.02 = 103,106.48 : x
  2. Step 2: Convert to fraction form
    189,146.54/261,019.02 = 103,106.48/x
  3. Step 3: Cross multiply
    189,146.54x = 261,019.02 × 103,106.48
  4. Step 4: Simplify right side
    189,146.54x = 26,912,752,365.25
  5. Step 5: Solve for x
    x = 26,912,752,365.25/189,146.54
  6. Step 6: Final answer
    x = 142,285.20

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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.