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Finding the Fourth Proportional to 163,686.34, 245,539.90 and 51,371

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Solution

The fourth proportional to 163,686.34, 245,539.90 and 51,371 is: 77,059.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,686.34 : 245,539.90 = 51,371 : x
  2. Step 2: Convert to fraction form
    163,686.34/245,539.90 = 51,371/x
  3. Step 3: Cross multiply
    163,686.34x = 245,539.90 × 51,371
  4. Step 4: Simplify right side
    163,686.34x = 12,613,630,202.90
  5. Step 5: Solve for x
    x = 12,613,630,202.90/163,686.34
  6. Step 6: Final answer
    x = 77,059.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.