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Finding the Fourth Proportional to 142,012.80, 195,969.60 and 88,300.80

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Solution

The fourth proportional to 142,012.80, 195,969.60 and 88,300.80 is: 121,850.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,012.80 : 195,969.60 = 88,300.80 : x
  2. Step 2: Convert to fraction form
    142,012.80/195,969.60 = 88,300.80/x
  3. Step 3: Cross multiply
    142,012.80x = 195,969.60 × 88,300.80
  4. Step 4: Simplify right side
    142,012.80x = 17,304,272,455.68
  5. Step 5: Solve for x
    x = 17,304,272,455.68/142,012.80
  6. Step 6: Final answer
    x = 121,850.09

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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.