Home / 129,111,954.10-178,185,172.05-74,118,440.50

Finding the Fourth Proportional to 129,111,954.10, 178,185,172.05 and 74,118,440.50

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Solution

The fourth proportional to 129,111,954.10, 178,185,172.05 and 74,118,440.50 is: 102,289,576.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,111,954.10 : 178,185,172.05 = 74,118,440.50 : x
  2. Step 2: Convert to fraction form
    129,111,954.10/178,185,172.05 = 74,118,440.50/x
  3. Step 3: Cross multiply
    129,111,954.10x = 178,185,172.05 × 74,118,440.50
  4. Step 4: Simplify right side
    129,111,954.10x = 13,206,807,072,570,188
  5. Step 5: Solve for x
    x = 13,206,807,072,570,188/129,111,954.10
  6. Step 6: Final answer
    x = 102,289,576.24

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Why These Related Problems?

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