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Finding the Fourth Proportional to 163,985.68, 245,978.70 and 45,657.28

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Solution

The fourth proportional to 163,985.68, 245,978.70 and 45,657.28 is: 68,485.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,985.68 : 245,978.70 = 45,657.28 : x
  2. Step 2: Convert to fraction form
    163,985.68/245,978.70 = 45,657.28/x
  3. Step 3: Cross multiply
    163,985.68x = 245,978.70 × 45,657.28
  4. Step 4: Simplify right side
    163,985.68x = 11,230,718,379.94
  5. Step 5: Solve for x
    x = 11,230,718,379.94/163,985.68
  6. Step 6: Final answer
    x = 68,485.97

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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.