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Finding the Fourth Proportional to 100,773,085.80, 151,159,628.70 and 80,617,693.80

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Solution

The fourth proportional to 100,773,085.80, 151,159,628.70 and 80,617,693.80 is: 120,926,540.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,773,085.80 : 151,159,628.70 = 80,617,693.80 : x
  2. Step 2: Convert to fraction form
    100,773,085.80/151,159,628.70 = 80,617,693.80/x
  3. Step 3: Cross multiply
    100,773,085.80x = 151,159,628.70 × 80,617,693.80
  4. Step 4: Simplify right side
    100,773,085.80x = 12,186,140,661,458,290
  5. Step 5: Solve for x
    x = 12,186,140,661,458,290/100,773,085.80
  6. Step 6: Final answer
    x = 120,926,540.70

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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.