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Finding the Fourth Proportional to 163,661.80, 245,147.10 and 146,151.40

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Solution

The fourth proportional to 163,661.80, 245,147.10 and 146,151.40 is: 218,918.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,661.80 : 245,147.10 = 146,151.40 : x
  2. Step 2: Convert to fraction form
    163,661.80/245,147.10 = 146,151.40/x
  3. Step 3: Cross multiply
    163,661.80x = 245,147.10 × 146,151.40
  4. Step 4: Simplify right side
    163,661.80x = 35,828,591,870.94
  5. Step 5: Solve for x
    x = 35,828,591,870.94/163,661.80
  6. Step 6: Final answer
    x = 218,918.48

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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.