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Finding the Fourth Proportional to 163,852.80, 245,836.80 and 70,387.20

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Solution

The fourth proportional to 163,852.80, 245,836.80 and 70,387.20 is: 105,605.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,852.80 : 245,836.80 = 70,387.20 : x
  2. Step 2: Convert to fraction form
    163,852.80/245,836.80 = 70,387.20/x
  3. Step 3: Cross multiply
    163,852.80x = 245,836.80 × 70,387.20
  4. Step 4: Simplify right side
    163,852.80x = 17,303,764,008.96
  5. Step 5: Solve for x
    x = 17,303,764,008.96/163,852.80
  6. Step 6: Final answer
    x = 105,605.54

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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.