Home / 139,259.04-192,157.20-79,631.52

Finding the Fourth Proportional to 139,259.04, 192,157.20 and 79,631.52

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Solution

The fourth proportional to 139,259.04, 192,157.20 and 79,631.52 is: 109,879.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,259.04 : 192,157.20 = 79,631.52 : x
  2. Step 2: Convert to fraction form
    139,259.04/192,157.20 = 79,631.52/x
  3. Step 3: Cross multiply
    139,259.04x = 192,157.20 × 79,631.52
  4. Step 4: Simplify right side
    139,259.04x = 15,301,769,914.94
  5. Step 5: Solve for x
    x = 15,301,769,914.94/139,259.04
  6. Step 6: Final answer
    x = 109,879.90

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1.5x scale

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.