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Finding the Fourth Proportional to 118,779.68, 163,908.96 and 65,054

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Solution

The fourth proportional to 118,779.68, 163,908.96 and 65,054 is: 89,770.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,779.68 : 163,908.96 = 65,054 : x
  2. Step 2: Convert to fraction form
    118,779.68/163,908.96 = 65,054/x
  3. Step 3: Cross multiply
    118,779.68x = 163,908.96 × 65,054
  4. Step 4: Simplify right side
    118,779.68x = 10,662,933,483.84
  5. Step 5: Solve for x
    x = 10,662,933,483.84/118,779.68
  6. Step 6: Final answer
    x = 89,770.69

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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.