Home / 80,863,246.60-121,294,869.90-72,129,243.40

Finding the Fourth Proportional to 80,863,246.60, 121,294,869.90 and 72,129,243.40

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Solution

The fourth proportional to 80,863,246.60, 121,294,869.90 and 72,129,243.40 is: 108,193,865.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,863,246.60 : 121,294,869.90 = 72,129,243.40 : x
  2. Step 2: Convert to fraction form
    80,863,246.60/121,294,869.90 = 72,129,243.40/x
  3. Step 3: Cross multiply
    80,863,246.60x = 121,294,869.90 × 72,129,243.40
  4. Step 4: Simplify right side
    80,863,246.60x = 8,748,907,194,188,435
  5. Step 5: Solve for x
    x = 8,748,907,194,188,435/80,863,246.60
  6. Step 6: Final answer
    x = 108,193,865.10

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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.