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Finding the Fourth Proportional to 8,168.55, 12,160.45 and 8,119.95

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Solution

The fourth proportional to 8,168.55, 12,160.45 and 8,119.95 is: 12,088.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,168.55 : 12,160.45 = 8,119.95 : x
  2. Step 2: Convert to fraction form
    8,168.55/12,160.45 = 8,119.95/x
  3. Step 3: Cross multiply
    8,168.55x = 12,160.45 × 8,119.95
  4. Step 4: Simplify right side
    8,168.55x = 98,742,225.68
  5. Step 5: Solve for x
    x = 98,742,225.68/8,168.55
  6. Step 6: Final answer
    x = 12,088.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.