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Finding the Fourth Proportional to 118,804.86, 163,944.90 and 65,090.16

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Solution

The fourth proportional to 118,804.86, 163,944.90 and 65,090.16 is: 89,821.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,804.86 : 163,944.90 = 65,090.16 : x
  2. Step 2: Convert to fraction form
    118,804.86/163,944.90 = 65,090.16/x
  3. Step 3: Cross multiply
    118,804.86x = 163,944.90 × 65,090.16
  4. Step 4: Simplify right side
    118,804.86x = 10,671,199,772.18
  5. Step 5: Solve for x
    x = 10,671,199,772.18/118,804.86
  6. Step 6: Final answer
    x = 89,821.24

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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.