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Finding the Fourth Proportional to 163,665.30, 245,368.35 and 89,793.30

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Solution

The fourth proportional to 163,665.30, 245,368.35 and 89,793.30 is: 134,618.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,665.30 : 245,368.35 = 89,793.30 : x
  2. Step 2: Convert to fraction form
    163,665.30/245,368.35 = 89,793.30/x
  3. Step 3: Cross multiply
    163,665.30x = 245,368.35 × 89,793.30
  4. Step 4: Simplify right side
    163,665.30x = 22,032,433,862.06
  5. Step 5: Solve for x
    x = 22,032,433,862.06/163,665.30
  6. Step 6: Final answer
    x = 134,618.85

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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.