Home / 218,722.12-301,836.54-118,120.12

Finding the Fourth Proportional to 218,722.12, 301,836.54 and 118,120.12

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Solution

The fourth proportional to 218,722.12, 301,836.54 and 118,120.12 is: 163,005.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,722.12 : 301,836.54 = 118,120.12 : x
  2. Step 2: Convert to fraction form
    218,722.12/301,836.54 = 118,120.12/x
  3. Step 3: Cross multiply
    218,722.12x = 301,836.54 × 118,120.12
  4. Step 4: Simplify right side
    218,722.12x = 35,652,968,325.18
  5. Step 5: Solve for x
    x = 35,652,968,325.18/218,722.12
  6. Step 6: Final answer
    x = 163,005.77

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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.