Home / 120,084.80-180,088.16-49,945.28

Finding the Fourth Proportional to 120,084.80, 180,088.16 and 49,945.28

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Solution

The fourth proportional to 120,084.80, 180,088.16 and 49,945.28 is: 74,901.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,084.80 : 180,088.16 = 49,945.28 : x
  2. Step 2: Convert to fraction form
    120,084.80/180,088.16 = 49,945.28/x
  3. Step 3: Cross multiply
    120,084.80x = 180,088.16 × 49,945.28
  4. Step 4: Simplify right side
    120,084.80x = 8,994,553,575.88
  5. Step 5: Solve for x
    x = 8,994,553,575.88/120,084.80
  6. Step 6: Final answer
    x = 74,901.68

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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.