Home / 142,534.08-196,698.78-78,877.80

Finding the Fourth Proportional to 142,534.08, 196,698.78 and 78,877.80

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Solution

The fourth proportional to 142,534.08, 196,698.78 and 78,877.80 is: 108,852.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,534.08 : 196,698.78 = 78,877.80 : x
  2. Step 2: Convert to fraction form
    142,534.08/196,698.78 = 78,877.80/x
  3. Step 3: Cross multiply
    142,534.08x = 196,698.78 × 78,877.80
  4. Step 4: Simplify right side
    142,534.08x = 15,515,167,029.08
  5. Step 5: Solve for x
    x = 15,515,167,029.08/142,534.08
  6. Step 6: Final answer
    x = 108,852.33

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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.