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Finding the Fourth Proportional to 118,230.48, 163,224.48 and 81,984.48

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Solution

The fourth proportional to 118,230.48, 163,224.48 and 81,984.48 is: 113,184.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,230.48 : 163,224.48 = 81,984.48 : x
  2. Step 2: Convert to fraction form
    118,230.48/163,224.48 = 81,984.48/x
  3. Step 3: Cross multiply
    118,230.48x = 163,224.48 × 81,984.48
  4. Step 4: Simplify right side
    118,230.48x = 13,381,874,116.07
  5. Step 5: Solve for x
    x = 13,381,874,116.07/118,230.48
  6. Step 6: Final answer
    x = 113,184.64

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1.5x scale

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.