Home / 99,643,548.30-149,488,942.05-51,128,889.90

Finding the Fourth Proportional to 99,643,548.30, 149,488,942.05 and 51,128,889.90

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Solution

The fourth proportional to 99,643,548.30, 149,488,942.05 and 51,128,889.90 is: 76,705,454.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,643,548.30 : 149,488,942.05 = 51,128,889.90 : x
  2. Step 2: Convert to fraction form
    99,643,548.30/149,488,942.05 = 51,128,889.90/x
  3. Step 3: Cross multiply
    99,643,548.30x = 149,488,942.05 × 51,128,889.90
  4. Step 4: Simplify right side
    99,643,548.30x = 7,643,203,659,341,931
  5. Step 5: Solve for x
    x = 7,643,203,659,341,931/99,643,548.30
  6. Step 6: Final answer
    x = 76,705,454.49

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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.