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Finding the Fourth Proportional to 111,807.68, 167,072.72 and 85,006.40

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Solution

The fourth proportional to 111,807.68, 167,072.72 and 85,006.40 is: 127,023.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,807.68 : 167,072.72 = 85,006.40 : x
  2. Step 2: Convert to fraction form
    111,807.68/167,072.72 = 85,006.40/x
  3. Step 3: Cross multiply
    111,807.68x = 167,072.72 × 85,006.40
  4. Step 4: Simplify right side
    111,807.68x = 14,202,250,465.41
  5. Step 5: Solve for x
    x = 14,202,250,465.41/111,807.68
  6. Step 6: Final answer
    x = 127,023.93

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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.