Home / 142,702.20-196,930.47-86,102.64

Finding the Fourth Proportional to 142,702.20, 196,930.47 and 86,102.64

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Solution

The fourth proportional to 142,702.20, 196,930.47 and 86,102.64 is: 118,822.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,702.20 : 196,930.47 = 86,102.64 : x
  2. Step 2: Convert to fraction form
    142,702.20/196,930.47 = 86,102.64/x
  3. Step 3: Cross multiply
    142,702.20x = 196,930.47 × 86,102.64
  4. Step 4: Simplify right side
    142,702.20x = 16,956,233,363.44
  5. Step 5: Solve for x
    x = 16,956,233,363.44/142,702.20
  6. Step 6: Final answer
    x = 118,822.51

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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.