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Finding the Fourth Proportional to 119,804.79, 165,323.93 and 66,079.11

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Solution

The fourth proportional to 119,804.79, 165,323.93 and 66,079.11 is: 91,185.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,804.79 : 165,323.93 = 66,079.11 : x
  2. Step 2: Convert to fraction form
    119,804.79/165,323.93 = 66,079.11/x
  3. Step 3: Cross multiply
    119,804.79x = 165,323.93 × 66,079.11
  4. Step 4: Simplify right side
    119,804.79x = 10,924,457,825.71
  5. Step 5: Solve for x
    x = 10,924,457,825.71/119,804.79
  6. Step 6: Final answer
    x = 91,185.48

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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.