Home / 142,907.80-197,220.64-79,244.23

Finding the Fourth Proportional to 142,907.80, 197,220.64 and 79,244.23

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Solution

The fourth proportional to 142,907.80, 197,220.64 and 79,244.23 is: 109,361.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,907.80 : 197,220.64 = 79,244.23 : x
  2. Step 2: Convert to fraction form
    142,907.80/197,220.64 = 79,244.23/x
  3. Step 3: Cross multiply
    142,907.80x = 197,220.64 × 79,244.23
  4. Step 4: Simplify right side
    142,907.80x = 15,628,597,756.91
  5. Step 5: Solve for x
    x = 15,628,597,756.91/142,907.80
  6. Step 6: Final answer
    x = 109,361.40

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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.