Home / 128,021,515.66-192,016,075.57-40,583,875.46

Finding the Fourth Proportional to 128,021,515.66, 192,016,075.57 and 40,583,875.46

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Solution

The fourth proportional to 128,021,515.66, 192,016,075.57 and 40,583,875.46 is: 60,870,678.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,021,515.66 : 192,016,075.57 = 40,583,875.46 : x
  2. Step 2: Convert to fraction form
    128,021,515.66/192,016,075.57 = 40,583,875.46/x
  3. Step 3: Cross multiply
    128,021,515.66x = 192,016,075.57 × 40,583,875.46
  4. Step 4: Simplify right side
    128,021,515.66x = 7,792,756,497,250,828
  5. Step 5: Solve for x
    x = 7,792,756,497,250,828/128,021,515.66
  6. Step 6: Final answer
    x = 60,870,678.32

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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.