Home / 197,782.78-272,941.54-107,138.74

Finding the Fourth Proportional to 197,782.78, 272,941.54 and 107,138.74

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Solution

The fourth proportional to 197,782.78, 272,941.54 and 107,138.74 is: 147,852.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,782.78 : 272,941.54 = 107,138.74 : x
  2. Step 2: Convert to fraction form
    197,782.78/272,941.54 = 107,138.74/x
  3. Step 3: Cross multiply
    197,782.78x = 272,941.54 × 107,138.74
  4. Step 4: Simplify right side
    197,782.78x = 29,242,612,689.26
  5. Step 5: Solve for x
    x = 29,242,612,689.26/197,782.78
  6. Step 6: Final answer
    x = 147,852.17

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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.