Home / 120,638.77-180,916.17-49,541.20

Finding the Fourth Proportional to 120,638.77, 180,916.17 and 49,541.20

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Solution

The fourth proportional to 120,638.77, 180,916.17 and 49,541.20 is: 74,294.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,638.77 : 180,916.17 = 49,541.20 : x
  2. Step 2: Convert to fraction form
    120,638.77/180,916.17 = 49,541.20/x
  3. Step 3: Cross multiply
    120,638.77x = 180,916.17 × 49,541.20
  4. Step 4: Simplify right side
    120,638.77x = 8,962,804,161.20
  5. Step 5: Solve for x
    x = 8,962,804,161.20/120,638.77
  6. Step 6: Final answer
    x = 74,294.56

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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.