Home / 107,442.78-161,011.35-79,140.27

Finding the Fourth Proportional to 107,442.78, 161,011.35 and 79,140.27

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Solution

The fourth proportional to 107,442.78, 161,011.35 and 79,140.27 is: 118,597.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,442.78 : 161,011.35 = 79,140.27 : x
  2. Step 2: Convert to fraction form
    107,442.78/161,011.35 = 79,140.27/x
  3. Step 3: Cross multiply
    107,442.78x = 161,011.35 × 79,140.27
  4. Step 4: Simplify right side
    107,442.78x = 12,742,481,712.06
  5. Step 5: Solve for x
    x = 12,742,481,712.06/107,442.78
  6. Step 6: Final answer
    x = 118,597.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.