Home / 137,478.36-189,725.40-77,049.48

Finding the Fourth Proportional to 137,478.36, 189,725.40 and 77,049.48

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Solution

The fourth proportional to 137,478.36, 189,725.40 and 77,049.48 is: 106,331.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,478.36 : 189,725.40 = 77,049.48 : x
  2. Step 2: Convert to fraction form
    137,478.36/189,725.40 = 77,049.48/x
  3. Step 3: Cross multiply
    137,478.36x = 189,725.40 × 77,049.48
  4. Step 4: Simplify right side
    137,478.36x = 14,618,243,412.79
  5. Step 5: Solve for x
    x = 14,618,243,412.79/137,478.36
  6. Step 6: Final answer
    x = 106,331.23

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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.