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Finding the Fourth Proportional to 163,615.96, 245,429.42 and 45,277.40

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Solution

The fourth proportional to 163,615.96, 245,429.42 and 45,277.40 is: 67,917.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,615.96 : 245,429.42 = 45,277.40 : x
  2. Step 2: Convert to fraction form
    163,615.96/245,429.42 = 45,277.40/x
  3. Step 3: Cross multiply
    163,615.96x = 245,429.42 × 45,277.40
  4. Step 4: Simplify right side
    163,615.96x = 11,112,406,021.11
  5. Step 5: Solve for x
    x = 11,112,406,021.11/163,615.96
  6. Step 6: Final answer
    x = 67,917.62

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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.