Home / 142,606.87-196,799.81-78,075.02

Finding the Fourth Proportional to 142,606.87, 196,799.81 and 78,075.02

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Solution

The fourth proportional to 142,606.87, 196,799.81 and 78,075.02 is: 107,744.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,606.87 : 196,799.81 = 78,075.02 : x
  2. Step 2: Convert to fraction form
    142,606.87/196,799.81 = 78,075.02/x
  3. Step 3: Cross multiply
    142,606.87x = 196,799.81 × 78,075.02
  4. Step 4: Simplify right side
    142,606.87x = 15,365,149,101.75
  5. Step 5: Solve for x
    x = 15,365,149,101.75/142,606.87
  6. Step 6: Final answer
    x = 107,744.80

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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.