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Finding the Fourth Proportional to 85,836.70, 119,938.10 and 85,836.70

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Solution

The fourth proportional to 85,836.70, 119,938.10 and 85,836.70 is: 119,938.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,836.70 : 119,938.10 = 85,836.70 : x
  2. Step 2: Convert to fraction form
    85,836.70/119,938.10 = 85,836.70/x
  3. Step 3: Cross multiply
    85,836.70x = 119,938.10 × 85,836.70
  4. Step 4: Simplify right side
    85,836.70x = 10,295,090,708.27
  5. Step 5: Solve for x
    x = 10,295,090,708.27/85,836.70
  6. Step 6: Final answer
    x = 119,938.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.