Home / 142,682.95-196,902.39-79,020.69

Finding the Fourth Proportional to 142,682.95, 196,902.39 and 79,020.69

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Solution

The fourth proportional to 142,682.95, 196,902.39 and 79,020.69 is: 109,048.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,682.95 : 196,902.39 = 79,020.69 : x
  2. Step 2: Convert to fraction form
    142,682.95/196,902.39 = 79,020.69/x
  3. Step 3: Cross multiply
    142,682.95x = 196,902.39 × 79,020.69
  4. Step 4: Simplify right side
    142,682.95x = 15,559,362,720.45
  5. Step 5: Solve for x
    x = 15,559,362,720.45/142,682.95
  6. Step 6: Final answer
    x = 109,048.51

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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.