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Finding the Fourth Proportional to 163,420.89, 245,016.99 and 83,483.61

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Solution

The fourth proportional to 163,420.89, 245,016.99 and 83,483.61 is: 125,167.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,420.89 : 245,016.99 = 83,483.61 : x
  2. Step 2: Convert to fraction form
    163,420.89/245,016.99 = 83,483.61/x
  3. Step 3: Cross multiply
    163,420.89x = 245,016.99 × 83,483.61
  4. Step 4: Simplify right side
    163,420.89x = 20,454,902,836.53
  5. Step 5: Solve for x
    x = 20,454,902,836.53/163,420.89
  6. Step 6: Final answer
    x = 125,167.00

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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.