Home / 149,156,591.28-205,846,441.20-90,421,731.96

Finding the Fourth Proportional to 149,156,591.28, 205,846,441.20 and 90,421,731.96

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Solution

The fourth proportional to 149,156,591.28, 205,846,441.20 and 90,421,731.96 is: 124,788,261.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,156,591.28 : 205,846,441.20 = 90,421,731.96 : x
  2. Step 2: Convert to fraction form
    149,156,591.28/205,846,441.20 = 90,421,731.96/x
  3. Step 3: Cross multiply
    149,156,591.28x = 205,846,441.20 × 90,421,731.96
  4. Step 4: Simplify right side
    149,156,591.28x = 18,612,991,731,106,300
  5. Step 5: Solve for x
    x = 18,612,991,731,106,300/149,156,591.28
  6. Step 6: Final answer
    x = 124,788,261.59

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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.