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Finding the Fourth Proportional to 118,703.44, 163,804.53 and 64,978.17

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Solution

The fourth proportional to 118,703.44, 163,804.53 and 64,978.17 is: 89,666.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,703.44 : 163,804.53 = 64,978.17 : x
  2. Step 2: Convert to fraction form
    118,703.44/163,804.53 = 64,978.17/x
  3. Step 3: Cross multiply
    118,703.44x = 163,804.53 × 64,978.17
  4. Step 4: Simplify right side
    118,703.44x = 10,643,717,861.01
  5. Step 5: Solve for x
    x = 10,643,717,861.01/118,703.44
  6. Step 6: Final answer
    x = 89,666.46

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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.