Home / 142,692.36-196,907.83-78,158.26

Finding the Fourth Proportional to 142,692.36, 196,907.83 and 78,158.26

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Solution

The fourth proportional to 142,692.36, 196,907.83 and 78,158.26 is: 107,854.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,692.36 : 196,907.83 = 78,158.26 : x
  2. Step 2: Convert to fraction form
    142,692.36/196,907.83 = 78,158.26/x
  3. Step 3: Cross multiply
    142,692.36x = 196,907.83 × 78,158.26
  4. Step 4: Simplify right side
    142,692.36x = 15,389,973,373.18
  5. Step 5: Solve for x
    x = 15,389,973,373.18/142,692.36
  6. Step 6: Final answer
    x = 107,854.22

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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.