Home / 147,905,362.80-221,432,891.40-90,509,734.80

Finding the Fourth Proportional to 147,905,362.80, 221,432,891.40 and 90,509,734.80

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Solution

The fourth proportional to 147,905,362.80, 221,432,891.40 and 90,509,734.80 is: 135,504,432.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,905,362.80 : 221,432,891.40 = 90,509,734.80 : x
  2. Step 2: Convert to fraction form
    147,905,362.80/221,432,891.40 = 90,509,734.80/x
  3. Step 3: Cross multiply
    147,905,362.80x = 221,432,891.40 × 90,509,734.80
  4. Step 4: Simplify right side
    147,905,362.80x = 20,041,832,276,611,200
  5. Step 5: Solve for x
    x = 20,041,832,276,611,200/147,905,362.80
  6. Step 6: Final answer
    x = 135,504,432.68

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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.