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Finding the Fourth Proportional to 118,811.55, 163,959.21 and 65,096.40

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Solution

The fourth proportional to 118,811.55, 163,959.21 and 65,096.40 is: 89,832.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,811.55 : 163,959.21 = 65,096.40 : x
  2. Step 2: Convert to fraction form
    118,811.55/163,959.21 = 65,096.40/x
  3. Step 3: Cross multiply
    118,811.55x = 163,959.21 × 65,096.40
  4. Step 4: Simplify right side
    118,811.55x = 10,673,154,317.84
  5. Step 5: Solve for x
    x = 10,673,154,317.84/118,811.55
  6. Step 6: Final answer
    x = 89,832.63

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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.