Home / 100,981.04-139,361.84-55,667.07

Finding the Fourth Proportional to 100,981.04, 139,361.84 and 55,667.07

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Solution

The fourth proportional to 100,981.04, 139,361.84 and 55,667.07 is: 76,824.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,981.04 : 139,361.84 = 55,667.07 : x
  2. Step 2: Convert to fraction form
    100,981.04/139,361.84 = 55,667.07/x
  3. Step 3: Cross multiply
    100,981.04x = 139,361.84 × 55,667.07
  4. Step 4: Simplify right side
    100,981.04x = 7,757,865,024.27
  5. Step 5: Solve for x
    x = 7,757,865,024.27/100,981.04
  6. Step 6: Final answer
    x = 76,824.97

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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.