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Finding the Fourth Proportional to 119,751.32, 165,254.64 and 66,041.30

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Solution

The fourth proportional to 119,751.32, 165,254.64 and 66,041.30 is: 91,135.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,751.32 : 165,254.64 = 66,041.30 : x
  2. Step 2: Convert to fraction form
    119,751.32/165,254.64 = 66,041.30/x
  3. Step 3: Cross multiply
    119,751.32x = 165,254.64 × 66,041.30
  4. Step 4: Simplify right side
    119,751.32x = 10,913,631,256.63
  5. Step 5: Solve for x
    x = 10,913,631,256.63/119,751.32
  6. Step 6: Final answer
    x = 91,135.79

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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.