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Finding the Fourth Proportional to 163,289.78, 245,010 and 74,570.48

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Solution

The fourth proportional to 163,289.78, 245,010 and 74,570.48 is: 111,890.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,289.78 : 245,010 = 74,570.48 : x
  2. Step 2: Convert to fraction form
    163,289.78/245,010 = 74,570.48/x
  3. Step 3: Cross multiply
    163,289.78x = 245,010 × 74,570.48
  4. Step 4: Simplify right side
    163,289.78x = 18,270,513,304.80
  5. Step 5: Solve for x
    x = 18,270,513,304.80/163,289.78
  6. Step 6: Final answer
    x = 111,890.12

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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.