Home / 147,905,201.80-221,432,649.90-90,509,573.80

Finding the Fourth Proportional to 147,905,201.80, 221,432,649.90 and 90,509,573.80

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Solution

The fourth proportional to 147,905,201.80, 221,432,649.90 and 90,509,573.80 is: 135,504,191.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,905,201.80 : 221,432,649.90 = 90,509,573.80 : x
  2. Step 2: Convert to fraction form
    147,905,201.80/221,432,649.90 = 90,509,573.80/x
  3. Step 3: Cross multiply
    147,905,201.80x = 221,432,649.90 × 90,509,573.80
  4. Step 4: Simplify right side
    147,905,201.80x = 20,041,774,767,853,612
  5. Step 5: Solve for x
    x = 20,041,774,767,853,612/147,905,201.80
  6. Step 6: Final answer
    x = 135,504,191.36

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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.