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Finding the Fourth Proportional to 119,754.47, 165,252.71 and 66,038.31

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Solution

The fourth proportional to 119,754.47, 165,252.71 and 66,038.31 is: 91,128.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,754.47 : 165,252.71 = 66,038.31 : x
  2. Step 2: Convert to fraction form
    119,754.47/165,252.71 = 66,038.31/x
  3. Step 3: Cross multiply
    119,754.47x = 165,252.71 × 66,038.31
  4. Step 4: Simplify right side
    119,754.47x = 10,913,009,361.13
  5. Step 5: Solve for x
    x = 10,913,009,361.13/119,754.47
  6. Step 6: Final answer
    x = 91,128.20

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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.