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Finding the Fourth Proportional to 163,939.62, 245,860.83 and 70,423.50

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Solution

The fourth proportional to 163,939.62, 245,860.83 and 70,423.50 is: 105,614.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,939.62 : 245,860.83 = 70,423.50 : x
  2. Step 2: Convert to fraction form
    163,939.62/245,860.83 = 70,423.50/x
  3. Step 3: Cross multiply
    163,939.62x = 245,860.83 × 70,423.50
  4. Step 4: Simplify right side
    163,939.62x = 17,314,380,161.51
  5. Step 5: Solve for x
    x = 17,314,380,161.51/163,939.62
  6. Step 6: Final answer
    x = 105,614.37

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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.