Home / 117,763.03-162,509.50-66,780.40

Finding the Fourth Proportional to 117,763.03, 162,509.50 and 66,780.40

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Solution

The fourth proportional to 117,763.03, 162,509.50 and 66,780.40 is: 92,154.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,763.03 : 162,509.50 = 66,780.40 : x
  2. Step 2: Convert to fraction form
    117,763.03/162,509.50 = 66,780.40/x
  3. Step 3: Cross multiply
    117,763.03x = 162,509.50 × 66,780.40
  4. Step 4: Simplify right side
    117,763.03x = 10,852,449,413.80
  5. Step 5: Solve for x
    x = 10,852,449,413.80/117,763.03
  6. Step 6: Final answer
    x = 92,154.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.