Home / 142,034.89-196,007.93-78,372.64

Finding the Fourth Proportional to 142,034.89, 196,007.93 and 78,372.64

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Solution

The fourth proportional to 142,034.89, 196,007.93 and 78,372.64 is: 108,154.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,034.89 : 196,007.93 = 78,372.64 : x
  2. Step 2: Convert to fraction form
    142,034.89/196,007.93 = 78,372.64/x
  3. Step 3: Cross multiply
    142,034.89x = 196,007.93 × 78,372.64
  4. Step 4: Simplify right side
    142,034.89x = 15,361,658,935.04
  5. Step 5: Solve for x
    x = 15,361,658,935.04/142,034.89
  6. Step 6: Final answer
    x = 108,154.12

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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.