Home / 142,688.03-196,907.90-79,025.67

Finding the Fourth Proportional to 142,688.03, 196,907.90 and 79,025.67

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Solution

The fourth proportional to 142,688.03, 196,907.90 and 79,025.67 is: 109,054.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,688.03 : 196,907.90 = 79,025.67 : x
  2. Step 2: Convert to fraction form
    142,688.03/196,907.90 = 79,025.67/x
  3. Step 3: Cross multiply
    142,688.03x = 196,907.90 × 79,025.67
  4. Step 4: Simplify right side
    142,688.03x = 15,560,778,330.66
  5. Step 5: Solve for x
    x = 15,560,778,330.66/142,688.03
  6. Step 6: Final answer
    x = 109,054.55

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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.