Home / 137,355.08-189,540.95-76,911.86

Finding the Fourth Proportional to 137,355.08, 189,540.95 and 76,911.86

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Solution

The fourth proportional to 137,355.08, 189,540.95 and 76,911.86 is: 106,133.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,355.08 : 189,540.95 = 76,911.86 : x
  2. Step 2: Convert to fraction form
    137,355.08/189,540.95 = 76,911.86/x
  3. Step 3: Cross multiply
    137,355.08x = 189,540.95 × 76,911.86
  4. Step 4: Simplify right side
    137,355.08x = 14,577,945,678.40
  5. Step 5: Solve for x
    x = 14,577,945,678.40/137,355.08
  6. Step 6: Final answer
    x = 106,133.29

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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.