Home / 140,109.64-193,355.57-79,688.98

Finding the Fourth Proportional to 140,109.64, 193,355.57 and 79,688.98

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Solution

The fourth proportional to 140,109.64, 193,355.57 and 79,688.98 is: 109,973.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,109.64 : 193,355.57 = 79,688.98 : x
  2. Step 2: Convert to fraction form
    140,109.64/193,355.57 = 79,688.98/x
  3. Step 3: Cross multiply
    140,109.64x = 193,355.57 × 79,688.98
  4. Step 4: Simplify right side
    140,109.64x = 15,408,308,591.54
  5. Step 5: Solve for x
    x = 15,408,308,591.54/140,109.64
  6. Step 6: Final answer
    x = 109,973.22

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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.