Home / 120,025.49-180,038.29-31,278.77

Finding the Fourth Proportional to 120,025.49, 180,038.29 and 31,278.77

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Solution

The fourth proportional to 120,025.49, 180,038.29 and 31,278.77 is: 46,918.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,025.49 : 180,038.29 = 31,278.77 : x
  2. Step 2: Convert to fraction form
    120,025.49/180,038.29 = 31,278.77/x
  3. Step 3: Cross multiply
    120,025.49x = 180,038.29 × 31,278.77
  4. Step 4: Simplify right side
    120,025.49x = 5,631,375,285.71
  5. Step 5: Solve for x
    x = 5,631,375,285.71/120,025.49
  6. Step 6: Final answer
    x = 46,918.16

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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.