Home / 139,966.20-193,152.87-76,303.98

Finding the Fourth Proportional to 139,966.20, 193,152.87 and 76,303.98

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Solution

The fourth proportional to 139,966.20, 193,152.87 and 76,303.98 is: 105,299.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,966.20 : 193,152.87 = 76,303.98 : x
  2. Step 2: Convert to fraction form
    139,966.20/193,152.87 = 76,303.98/x
  3. Step 3: Cross multiply
    139,966.20x = 193,152.87 × 76,303.98
  4. Step 4: Simplify right side
    139,966.20x = 14,738,332,729.42
  5. Step 5: Solve for x
    x = 14,738,332,729.42/139,966.20
  6. Step 6: Final answer
    x = 105,299.23

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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.