Home / 142,885.74-197,142.40-112,576.98

Finding the Fourth Proportional to 142,885.74, 197,142.40 and 112,576.98

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Solution

The fourth proportional to 142,885.74, 197,142.40 and 112,576.98 is: 155,324.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,885.74 : 197,142.40 = 112,576.98 : x
  2. Step 2: Convert to fraction form
    142,885.74/197,142.40 = 112,576.98/x
  3. Step 3: Cross multiply
    142,885.74x = 197,142.40 × 112,576.98
  4. Step 4: Simplify right side
    142,885.74x = 22,193,696,021.95
  5. Step 5: Solve for x
    x = 22,193,696,021.95/142,885.74
  6. Step 6: Final answer
    x = 155,324.78

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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.