Home / 142,607.35-196,800.47-78,075.51

Finding the Fourth Proportional to 142,607.35, 196,800.47 and 78,075.51

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Solution

The fourth proportional to 142,607.35, 196,800.47 and 78,075.51 is: 107,745.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,607.35 : 196,800.47 = 78,075.51 : x
  2. Step 2: Convert to fraction form
    142,607.35/196,800.47 = 78,075.51/x
  3. Step 3: Cross multiply
    142,607.35x = 196,800.47 × 78,075.51
  4. Step 4: Simplify right side
    142,607.35x = 15,365,297,063.49
  5. Step 5: Solve for x
    x = 15,365,297,063.49/142,607.35
  6. Step 6: Final answer
    x = 107,745.48

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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.