Home / 128,318.04-192,486.78-34,831.08

Finding the Fourth Proportional to 128,318.04, 192,486.78 and 34,831.08

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Solution

The fourth proportional to 128,318.04, 192,486.78 and 34,831.08 is: 52,249.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,318.04 : 192,486.78 = 34,831.08 : x
  2. Step 2: Convert to fraction form
    128,318.04/192,486.78 = 34,831.08/x
  3. Step 3: Cross multiply
    128,318.04x = 192,486.78 × 34,831.08
  4. Step 4: Simplify right side
    128,318.04x = 6,704,522,433.12
  5. Step 5: Solve for x
    x = 6,704,522,433.12/128,318.04
  6. Step 6: Final answer
    x = 52,249.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.