Home / 129,982,885.02-179,394,749.73-80,439,207.48

Finding the Fourth Proportional to 129,982,885.02, 179,394,749.73 and 80,439,207.48

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Solution

The fourth proportional to 129,982,885.02, 179,394,749.73 and 80,439,207.48 is: 111,017,473.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,982,885.02 : 179,394,749.73 = 80,439,207.48 : x
  2. Step 2: Convert to fraction form
    129,982,885.02/179,394,749.73 = 80,439,207.48/x
  3. Step 3: Cross multiply
    129,982,885.02x = 179,394,749.73 × 80,439,207.48
  4. Step 4: Simplify right side
    129,982,885.02x = 14,430,371,494,354,144
  5. Step 5: Solve for x
    x = 14,430,371,494,354,144/129,982,885.02
  6. Step 6: Final answer
    x = 111,017,473.51

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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.