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Finding the Fourth Proportional to 158,295.67, 218,448.38 and 85,699.33

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Solution

The fourth proportional to 158,295.67, 218,448.38 and 85,699.33 is: 118,265.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,295.67 : 218,448.38 = 85,699.33 : x
  2. Step 2: Convert to fraction form
    158,295.67/218,448.38 = 85,699.33/x
  3. Step 3: Cross multiply
    158,295.67x = 218,448.38 × 85,699.33
  4. Step 4: Simplify right side
    158,295.67x = 18,720,880,115.31
  5. Step 5: Solve for x
    x = 18,720,880,115.31/158,295.67
  6. Step 6: Final answer
    x = 118,265.27

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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.