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Finding the Fourth Proportional to 163,847.80, 245,577.30 and 84,921.40

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Solution

The fourth proportional to 163,847.80, 245,577.30 and 84,921.40 is: 127,281.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,847.80 : 245,577.30 = 84,921.40 : x
  2. Step 2: Convert to fraction form
    163,847.80/245,577.30 = 84,921.40/x
  3. Step 3: Cross multiply
    163,847.80x = 245,577.30 × 84,921.40
  4. Step 4: Simplify right side
    163,847.80x = 20,854,768,124.22
  5. Step 5: Solve for x
    x = 20,854,768,124.22/163,847.80
  6. Step 6: Final answer
    x = 127,281.34

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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.