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Finding the Fourth Proportional to 118,372, 163,346.68 and 67,397.16

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Solution

The fourth proportional to 118,372, 163,346.68 and 67,397.16 is: 93,004.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,372 : 163,346.68 = 67,397.16 : x
  2. Step 2: Convert to fraction form
    118,372/163,346.68 = 67,397.16/x
  3. Step 3: Cross multiply
    118,372x = 163,346.68 × 67,397.16
  4. Step 4: Simplify right side
    118,372x = 11,009,102,327.43
  5. Step 5: Solve for x
    x = 11,009,102,327.43/118,372
  6. Step 6: Final answer
    x = 93,004.28

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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.