Home / 129,633,730.40-194,419,491.60-74,928,015.20

Finding the Fourth Proportional to 129,633,730.40, 194,419,491.60 and 74,928,015.20

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Solution

The fourth proportional to 129,633,730.40, 194,419,491.60 and 74,928,015.20 is: 112,374,044.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,633,730.40 : 194,419,491.60 = 74,928,015.20 : x
  2. Step 2: Convert to fraction form
    129,633,730.40/194,419,491.60 = 74,928,015.20/x
  3. Step 3: Cross multiply
    129,633,730.40x = 194,419,491.60 × 74,928,015.20
  4. Step 4: Simplify right side
    129,633,730.40x = 14,567,466,621,781,072
  5. Step 5: Solve for x
    x = 14,567,466,621,781,072/129,633,730.40
  6. Step 6: Final answer
    x = 112,374,044.76

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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.