Home / 136,968.78-189,075.12-83,270.94

Finding the Fourth Proportional to 136,968.78, 189,075.12 and 83,270.94

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Solution

The fourth proportional to 136,968.78, 189,075.12 and 83,270.94 is: 114,949.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,968.78 : 189,075.12 = 83,270.94 : x
  2. Step 2: Convert to fraction form
    136,968.78/189,075.12 = 83,270.94/x
  3. Step 3: Cross multiply
    136,968.78x = 189,075.12 × 83,270.94
  4. Step 4: Simplify right side
    136,968.78x = 15,744,462,973.01
  5. Step 5: Solve for x
    x = 15,744,462,973.01/136,968.78
  6. Step 6: Final answer
    x = 114,949.28

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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.