Home / 154,280.49-212,821.40-89,742.46

Finding the Fourth Proportional to 154,280.49, 212,821.40 and 89,742.46

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Solution

The fourth proportional to 154,280.49, 212,821.40 and 89,742.46 is: 123,794.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,280.49 : 212,821.40 = 89,742.46 : x
  2. Step 2: Convert to fraction form
    154,280.49/212,821.40 = 89,742.46/x
  3. Step 3: Cross multiply
    154,280.49x = 212,821.40 × 89,742.46
  4. Step 4: Simplify right side
    154,280.49x = 19,099,114,912.54
  5. Step 5: Solve for x
    x = 19,099,114,912.54/154,280.49
  6. Step 6: Final answer
    x = 123,794.76

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1.5x scale

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.