Home / 120,163,615.20-180,245,422.80-79,774,099.20

Finding the Fourth Proportional to 120,163,615.20, 180,245,422.80 and 79,774,099.20

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Solution

The fourth proportional to 120,163,615.20, 180,245,422.80 and 79,774,099.20 is: 119,661,148.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,163,615.20 : 180,245,422.80 = 79,774,099.20 : x
  2. Step 2: Convert to fraction form
    120,163,615.20/180,245,422.80 = 79,774,099.20/x
  3. Step 3: Cross multiply
    120,163,615.20x = 180,245,422.80 × 79,774,099.20
  4. Step 4: Simplify right side
    120,163,615.20x = 14,378,916,238,793,144
  5. Step 5: Solve for x
    x = 14,378,916,238,793,144/120,163,615.20
  6. Step 6: Final answer
    x = 119,661,148.80

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1.5x scale

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.