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Finding the Fourth Proportional to 85,284.80, 119,243.20 and 85,284.80

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Solution

The fourth proportional to 85,284.80, 119,243.20 and 85,284.80 is: 119,243.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,284.80 : 119,243.20 = 85,284.80 : x
  2. Step 2: Convert to fraction form
    85,284.80/119,243.20 = 85,284.80/x
  3. Step 3: Cross multiply
    85,284.80x = 119,243.20 × 85,284.80
  4. Step 4: Simplify right side
    85,284.80x = 10,169,632,463.36
  5. Step 5: Solve for x
    x = 10,169,632,463.36/85,284.80
  6. Step 6: Final answer
    x = 119,243.20

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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.