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Finding the Fourth Proportional to 119,745.68, 165,258.88 and 66,041.20

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Solution

The fourth proportional to 119,745.68, 165,258.88 and 66,041.20 is: 91,142.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,745.68 : 165,258.88 = 66,041.20 : x
  2. Step 2: Convert to fraction form
    119,745.68/165,258.88 = 66,041.20/x
  3. Step 3: Cross multiply
    119,745.68x = 165,258.88 × 66,041.20
  4. Step 4: Simplify right side
    119,745.68x = 10,913,894,745.86
  5. Step 5: Solve for x
    x = 10,913,894,745.86/119,745.68
  6. Step 6: Final answer
    x = 91,142.28

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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.