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Finding the Fourth Proportional to 121,698.63, 168,803.34 and 118,461.87

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Solution

The fourth proportional to 121,698.63, 168,803.34 and 118,461.87 is: 164,313.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,698.63 : 168,803.34 = 118,461.87 : x
  2. Step 2: Convert to fraction form
    121,698.63/168,803.34 = 118,461.87/x
  3. Step 3: Cross multiply
    121,698.63x = 168,803.34 × 118,461.87
  4. Step 4: Simplify right side
    121,698.63x = 19,996,759,318.65
  5. Step 5: Solve for x
    x = 19,996,759,318.65/121,698.63
  6. Step 6: Final answer
    x = 164,313.76

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These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.