Home / 117,100.12-161,558.30-66,106.84

Finding the Fourth Proportional to 117,100.12, 161,558.30 and 66,106.84

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Solution

The fourth proportional to 117,100.12, 161,558.30 and 66,106.84 is: 91,204.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,100.12 : 161,558.30 = 66,106.84 : x
  2. Step 2: Convert to fraction form
    117,100.12/161,558.30 = 66,106.84/x
  3. Step 3: Cross multiply
    117,100.12x = 161,558.30 × 66,106.84
  4. Step 4: Simplify right side
    117,100.12x = 10,680,108,688.77
  5. Step 5: Solve for x
    x = 10,680,108,688.77/117,100.12
  6. Step 6: Final answer
    x = 91,204.93

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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.