Home / 137,331.48-189,501.78-76,893.72

Finding the Fourth Proportional to 137,331.48, 189,501.78 and 76,893.72

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Solution

The fourth proportional to 137,331.48, 189,501.78 and 76,893.72 is: 106,104.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,331.48 : 189,501.78 = 76,893.72 : x
  2. Step 2: Convert to fraction form
    137,331.48/189,501.78 = 76,893.72/x
  3. Step 3: Cross multiply
    137,331.48x = 189,501.78 × 76,893.72
  4. Step 4: Simplify right side
    137,331.48x = 14,571,496,810.82
  5. Step 5: Solve for x
    x = 14,571,496,810.82/137,331.48
  6. Step 6: Final answer
    x = 106,104.56

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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.