Home / 142,878.13-197,182.97-79,228.33

Finding the Fourth Proportional to 142,878.13, 197,182.97 and 79,228.33

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Solution

The fourth proportional to 142,878.13, 197,182.97 and 79,228.33 is: 109,341.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,878.13 : 197,182.97 = 79,228.33 : x
  2. Step 2: Convert to fraction form
    142,878.13/197,182.97 = 79,228.33/x
  3. Step 3: Cross multiply
    142,878.13x = 197,182.97 × 79,228.33
  4. Step 4: Simplify right side
    142,878.13x = 15,622,477,021.40
  5. Step 5: Solve for x
    x = 15,622,477,021.40/142,878.13
  6. Step 6: Final answer
    x = 109,341.28

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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.