Home / 112,413.40-168,555.30-42,299.80

Finding the Fourth Proportional to 112,413.40, 168,555.30 and 42,299.80

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Solution

The fourth proportional to 112,413.40, 168,555.30 and 42,299.80 is: 63,425.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,413.40 : 168,555.30 = 42,299.80 : x
  2. Step 2: Convert to fraction form
    112,413.40/168,555.30 = 42,299.80/x
  3. Step 3: Cross multiply
    112,413.40x = 168,555.30 × 42,299.80
  4. Step 4: Simplify right side
    112,413.40x = 7,129,855,478.94
  5. Step 5: Solve for x
    x = 7,129,855,478.94/112,413.40
  6. Step 6: Final answer
    x = 63,425.32

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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.