Home / 137,011.12-189,133.64-83,313.38

Finding the Fourth Proportional to 137,011.12, 189,133.64 and 83,313.38

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Solution

The fourth proportional to 137,011.12, 189,133.64 and 83,313.38 is: 115,007.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,011.12 : 189,133.64 = 83,313.38 : x
  2. Step 2: Convert to fraction form
    137,011.12/189,133.64 = 83,313.38/x
  3. Step 3: Cross multiply
    137,011.12x = 189,133.64 × 83,313.38
  4. Step 4: Simplify right side
    137,011.12x = 15,757,362,820.10
  5. Step 5: Solve for x
    x = 15,757,362,820.10/137,011.12
  6. Step 6: Final answer
    x = 115,007.91

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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.