Home / 142,848.08-197,128.80-82,418

Finding the Fourth Proportional to 142,848.08, 197,128.80 and 82,418

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Solution

The fourth proportional to 142,848.08, 197,128.80 and 82,418 is: 113,735.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,848.08 : 197,128.80 = 82,418 : x
  2. Step 2: Convert to fraction form
    142,848.08/197,128.80 = 82,418/x
  3. Step 3: Cross multiply
    142,848.08x = 197,128.80 × 82,418
  4. Step 4: Simplify right side
    142,848.08x = 16,246,961,438.40
  5. Step 5: Solve for x
    x = 16,246,961,438.40/142,848.08
  6. Step 6: Final answer
    x = 113,735.95

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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.