Home / 142,982.90-197,295.88-85,608.47

Finding the Fourth Proportional to 142,982.90, 197,295.88 and 85,608.47

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Solution

The fourth proportional to 142,982.90, 197,295.88 and 85,608.47 is: 118,127.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,982.90 : 197,295.88 = 85,608.47 : x
  2. Step 2: Convert to fraction form
    142,982.90/197,295.88 = 85,608.47/x
  3. Step 3: Cross multiply
    142,982.90x = 197,295.88 × 85,608.47
  4. Step 4: Simplify right side
    142,982.90x = 16,890,198,068.17
  5. Step 5: Solve for x
    x = 16,890,198,068.17/142,982.90
  6. Step 6: Final answer
    x = 118,127.40

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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.