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Finding the Fourth Proportional to 163,471.68, 245,208.06 and 45,140.40

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Solution

The fourth proportional to 163,471.68, 245,208.06 and 45,140.40 is: 67,710.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,471.68 : 245,208.06 = 45,140.40 : x
  2. Step 2: Convert to fraction form
    163,471.68/245,208.06 = 45,140.40/x
  3. Step 3: Cross multiply
    163,471.68x = 245,208.06 × 45,140.40
  4. Step 4: Simplify right side
    163,471.68x = 11,068,789,911.62
  5. Step 5: Solve for x
    x = 11,068,789,911.62/163,471.68
  6. Step 6: Final answer
    x = 67,710.75

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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.