Home / 136,870,428.72-188,873,968.92-78,130,758

Finding the Fourth Proportional to 136,870,428.72, 188,873,968.92 and 78,130,758

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Solution

The fourth proportional to 136,870,428.72, 188,873,968.92 and 78,130,758 is: 107,816,323.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,870,428.72 : 188,873,968.92 = 78,130,758 : x
  2. Step 2: Convert to fraction form
    136,870,428.72/188,873,968.92 = 78,130,758/x
  3. Step 3: Cross multiply
    136,870,428.72x = 188,873,968.92 × 78,130,758
  4. Step 4: Simplify right side
    136,870,428.72x = 14,756,866,358,188,040
  5. Step 5: Solve for x
    x = 14,756,866,358,188,040/136,870,428.72
  6. Step 6: Final answer
    x = 107,816,323.05

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.