Home / 142,235.58-196,284.48-78,573.39

Finding the Fourth Proportional to 142,235.58, 196,284.48 and 78,573.39

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Solution

The fourth proportional to 142,235.58, 196,284.48 and 78,573.39 is: 108,430.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,235.58 : 196,284.48 = 78,573.39 : x
  2. Step 2: Convert to fraction form
    142,235.58/196,284.48 = 78,573.39/x
  3. Step 3: Cross multiply
    142,235.58x = 196,284.48 × 78,573.39
  4. Step 4: Simplify right side
    142,235.58x = 15,422,736,997.99
  5. Step 5: Solve for x
    x = 15,422,736,997.99/142,235.58
  6. Step 6: Final answer
    x = 108,430.94

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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.