Home / 147,931.80-221,751.90-72,990.60

Finding the Fourth Proportional to 147,931.80, 221,751.90 and 72,990.60

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Solution

The fourth proportional to 147,931.80, 221,751.90 and 72,990.60 is: 109,413.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,931.80 : 221,751.90 = 72,990.60 : x
  2. Step 2: Convert to fraction form
    147,931.80/221,751.90 = 72,990.60/x
  3. Step 3: Cross multiply
    147,931.80x = 221,751.90 × 72,990.60
  4. Step 4: Simplify right side
    147,931.80x = 16,185,804,232.14
  5. Step 5: Solve for x
    x = 16,185,804,232.14/147,931.80
  6. Step 6: Final answer
    x = 109,413.96

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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.