Home / 142,984.77-197,319.22-79,322.57

Finding the Fourth Proportional to 142,984.77, 197,319.22 and 79,322.57

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Solution

The fourth proportional to 142,984.77, 197,319.22 and 79,322.57 is: 109,465.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,984.77 : 197,319.22 = 79,322.57 : x
  2. Step 2: Convert to fraction form
    142,984.77/197,319.22 = 79,322.57/x
  3. Step 3: Cross multiply
    142,984.77x = 197,319.22 × 79,322.57
  4. Step 4: Simplify right side
    142,984.77x = 15,651,866,257.59
  5. Step 5: Solve for x
    x = 15,651,866,257.59/142,984.77
  6. Step 6: Final answer
    x = 109,465.27

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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.