Home / 136,326,105.40-204,489,158.10-78,788,759.80

Finding the Fourth Proportional to 136,326,105.40, 204,489,158.10 and 78,788,759.80

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Solution

The fourth proportional to 136,326,105.40, 204,489,158.10 and 78,788,759.80 is: 118,183,139.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,326,105.40 : 204,489,158.10 = 78,788,759.80 : x
  2. Step 2: Convert to fraction form
    136,326,105.40/204,489,158.10 = 78,788,759.80/x
  3. Step 3: Cross multiply
    136,326,105.40x = 204,489,158.10 × 78,788,759.80
  4. Step 4: Simplify right side
    136,326,105.40x = 16,111,447,159,245,124
  5. Step 5: Solve for x
    x = 16,111,447,159,245,124/136,326,105.40
  6. Step 6: Final answer
    x = 118,183,139.70

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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.