Home / 72,769,969.20-109,154,953.80-69,900,187.80

Finding the Fourth Proportional to 72,769,969.20, 109,154,953.80 and 69,900,187.80

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Solution

The fourth proportional to 72,769,969.20, 109,154,953.80 and 69,900,187.80 is: 104,850,281.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,769,969.20 : 109,154,953.80 = 69,900,187.80 : x
  2. Step 2: Convert to fraction form
    72,769,969.20/109,154,953.80 = 69,900,187.80/x
  3. Step 3: Cross multiply
    72,769,969.20x = 109,154,953.80 × 69,900,187.80
  4. Step 4: Simplify right side
    72,769,969.20x = 7,629,951,769,920,323
  5. Step 5: Solve for x
    x = 7,629,951,769,920,323/72,769,969.20
  6. Step 6: Final answer
    x = 104,850,281.70

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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.