Home / 139,622.04-192,678.46-79,173.32

Finding the Fourth Proportional to 139,622.04, 192,678.46 and 79,173.32

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Solution

The fourth proportional to 139,622.04, 192,678.46 and 79,173.32 is: 109,259.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,622.04 : 192,678.46 = 79,173.32 : x
  2. Step 2: Convert to fraction form
    139,622.04/192,678.46 = 79,173.32/x
  3. Step 3: Cross multiply
    139,622.04x = 192,678.46 × 79,173.32
  4. Step 4: Simplify right side
    139,622.04x = 15,254,993,370.69
  5. Step 5: Solve for x
    x = 15,254,993,370.69/139,622.04
  6. Step 6: Final answer
    x = 109,259.21

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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.