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Finding the Fourth Proportional to 163,656.80, 245,355.60 and 89,784.80

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Solution

The fourth proportional to 163,656.80, 245,355.60 and 89,784.80 is: 134,606.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,656.80 : 245,355.60 = 89,784.80 : x
  2. Step 2: Convert to fraction form
    163,656.80/245,355.60 = 89,784.80/x
  3. Step 3: Cross multiply
    163,656.80x = 245,355.60 × 89,784.80
  4. Step 4: Simplify right side
    163,656.80x = 22,029,203,474.88
  5. Step 5: Solve for x
    x = 22,029,203,474.88/163,656.80
  6. Step 6: Final answer
    x = 134,606.10

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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.