Home / 134,054.30-200,908.65-81,407.90

Finding the Fourth Proportional to 134,054.30, 200,908.65 and 81,407.90

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Solution

The fourth proportional to 134,054.30, 200,908.65 and 81,407.90 is: 122,006.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,054.30 : 200,908.65 = 81,407.90 : x
  2. Step 2: Convert to fraction form
    134,054.30/200,908.65 = 81,407.90/x
  3. Step 3: Cross multiply
    134,054.30x = 200,908.65 × 81,407.90
  4. Step 4: Simplify right side
    134,054.30x = 16,355,551,288.34
  5. Step 5: Solve for x
    x = 16,355,551,288.34/134,054.30
  6. Step 6: Final answer
    x = 122,006.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.