Home / 197,424.91-272,445.35-106,780.78

Finding the Fourth Proportional to 197,424.91, 272,445.35 and 106,780.78

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Solution

The fourth proportional to 197,424.91, 272,445.35 and 106,780.78 is: 147,356.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,424.91 : 272,445.35 = 106,780.78 : x
  2. Step 2: Convert to fraction form
    197,424.91/272,445.35 = 106,780.78/x
  3. Step 3: Cross multiply
    197,424.91x = 272,445.35 × 106,780.78
  4. Step 4: Simplify right side
    197,424.91x = 29,091,926,980.37
  5. Step 5: Solve for x
    x = 29,091,926,980.37/197,424.91
  6. Step 6: Final answer
    x = 147,356.92

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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.