Home / 161,528.19-222,916.23-89,912.78

Finding the Fourth Proportional to 161,528.19, 222,916.23 and 89,912.78

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Solution

The fourth proportional to 161,528.19, 222,916.23 and 89,912.78 is: 124,083.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,528.19 : 222,916.23 = 89,912.78 : x
  2. Step 2: Convert to fraction form
    161,528.19/222,916.23 = 89,912.78/x
  3. Step 3: Cross multiply
    161,528.19x = 222,916.23 × 89,912.78
  4. Step 4: Simplify right side
    161,528.19x = 20,043,018,503.71
  5. Step 5: Solve for x
    x = 20,043,018,503.71/161,528.19
  6. Step 6: Final answer
    x = 124,083.72

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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.