Home / 133,119.28-183,704.94-72,690.40

Finding the Fourth Proportional to 133,119.28, 183,704.94 and 72,690.40

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Solution

The fourth proportional to 133,119.28, 183,704.94 and 72,690.40 is: 100,312.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,119.28 : 183,704.94 = 72,690.40 : x
  2. Step 2: Convert to fraction form
    133,119.28/183,704.94 = 72,690.40/x
  3. Step 3: Cross multiply
    133,119.28x = 183,704.94 × 72,690.40
  4. Step 4: Simplify right side
    133,119.28x = 13,353,585,570.58
  5. Step 5: Solve for x
    x = 13,353,585,570.58/133,119.28
  6. Step 6: Final answer
    x = 100,312.93

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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.