Home / 142,583.28-196,751.44-85,211.20

Finding the Fourth Proportional to 142,583.28, 196,751.44 and 85,211.20

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Solution

The fourth proportional to 142,583.28, 196,751.44 and 85,211.20 is: 117,583.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,583.28 : 196,751.44 = 85,211.20 : x
  2. Step 2: Convert to fraction form
    142,583.28/196,751.44 = 85,211.20/x
  3. Step 3: Cross multiply
    142,583.28x = 196,751.44 × 85,211.20
  4. Step 4: Simplify right side
    142,583.28x = 16,765,426,304.13
  5. Step 5: Solve for x
    x = 16,765,426,304.13/142,583.28
  6. Step 6: Final answer
    x = 117,583.40

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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.