Home / 123,913.40-185,870.10-89,180.60

Finding the Fourth Proportional to 123,913.40, 185,870.10 and 89,180.60

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Solution

The fourth proportional to 123,913.40, 185,870.10 and 89,180.60 is: 133,770.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,913.40 : 185,870.10 = 89,180.60 : x
  2. Step 2: Convert to fraction form
    123,913.40/185,870.10 = 89,180.60/x
  3. Step 3: Cross multiply
    123,913.40x = 185,870.10 × 89,180.60
  4. Step 4: Simplify right side
    123,913.40x = 16,576,007,040.06
  5. Step 5: Solve for x
    x = 16,576,007,040.06/123,913.40
  6. Step 6: Final answer
    x = 133,770.90

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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.