Home / 137,090.33-189,183.35-76,660.28

Finding the Fourth Proportional to 137,090.33, 189,183.35 and 76,660.28

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Solution

The fourth proportional to 137,090.33, 189,183.35 and 76,660.28 is: 105,790.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,090.33 : 189,183.35 = 76,660.28 : x
  2. Step 2: Convert to fraction form
    137,090.33/189,183.35 = 76,660.28/x
  3. Step 3: Cross multiply
    137,090.33x = 189,183.35 × 76,660.28
  4. Step 4: Simplify right side
    137,090.33x = 14,502,847,828.07
  5. Step 5: Solve for x
    x = 14,502,847,828.07/137,090.33
  6. Step 6: Final answer
    x = 105,790.45

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1.5x scale

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.