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Finding the Fourth Proportional to 118,745.28, 163,868.40 and 65,030.04

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Solution

The fourth proportional to 118,745.28, 163,868.40 and 65,030.04 is: 89,741.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,745.28 : 163,868.40 = 65,030.04 : x
  2. Step 2: Convert to fraction form
    118,745.28/163,868.40 = 65,030.04/x
  3. Step 3: Cross multiply
    118,745.28x = 163,868.40 × 65,030.04
  4. Step 4: Simplify right side
    118,745.28x = 10,656,368,606.74
  5. Step 5: Solve for x
    x = 10,656,368,606.74/118,745.28
  6. Step 6: Final answer
    x = 89,741.41

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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.