Home / 137,341.62-189,568.08-128,977.56

Finding the Fourth Proportional to 137,341.62, 189,568.08 and 128,977.56

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Solution

The fourth proportional to 137,341.62, 189,568.08 and 128,977.56 is: 178,023.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,341.62 : 189,568.08 = 128,977.56 : x
  2. Step 2: Convert to fraction form
    137,341.62/189,568.08 = 128,977.56/x
  3. Step 3: Cross multiply
    137,341.62x = 189,568.08 × 128,977.56
  4. Step 4: Simplify right side
    137,341.62x = 24,450,028,412.28
  5. Step 5: Solve for x
    x = 24,450,028,412.28/137,341.62
  6. Step 6: Final answer
    x = 178,023.45

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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.