Home / 142,983.52-197,317.49-79,321.32

Finding the Fourth Proportional to 142,983.52, 197,317.49 and 79,321.32

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Solution

The fourth proportional to 142,983.52, 197,317.49 and 79,321.32 is: 109,463.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,983.52 : 197,317.49 = 79,321.32 : x
  2. Step 2: Convert to fraction form
    142,983.52/197,317.49 = 79,321.32/x
  3. Step 3: Cross multiply
    142,983.52x = 197,317.49 × 79,321.32
  4. Step 4: Simplify right side
    142,983.52x = 15,651,483,272.59
  5. Step 5: Solve for x
    x = 15,651,483,272.59/142,983.52
  6. Step 6: Final answer
    x = 109,463.55

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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.