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Finding the Fourth Proportional to 118,745.49, 163,869.30 and 65,030.88

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Solution

The fourth proportional to 118,745.49, 163,869.30 and 65,030.88 is: 89,742.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,745.49 : 163,869.30 = 65,030.88 : x
  2. Step 2: Convert to fraction form
    118,745.49/163,869.30 = 65,030.88/x
  3. Step 3: Cross multiply
    118,745.49x = 163,869.30 × 65,030.88
  4. Step 4: Simplify right side
    118,745.49x = 10,656,564,783.98
  5. Step 5: Solve for x
    x = 10,656,564,783.98/118,745.49
  6. Step 6: Final answer
    x = 89,742.90

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1.5x scale

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.