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Finding the Fourth Proportional to 118,667.50, 163,840.43 and 70,284.99

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Solution

The fourth proportional to 118,667.50, 163,840.43 and 70,284.99 is: 97,040.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,667.50 : 163,840.43 = 70,284.99 : x
  2. Step 2: Convert to fraction form
    118,667.50/163,840.43 = 70,284.99/x
  3. Step 3: Cross multiply
    118,667.50x = 163,840.43 × 70,284.99
  4. Step 4: Simplify right side
    118,667.50x = 11,515,522,984.15
  5. Step 5: Solve for x
    x = 11,515,522,984.15/118,667.50
  6. Step 6: Final answer
    x = 97,040.24

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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.