Home / 121,213.40-181,755.30-51,013.40

Finding the Fourth Proportional to 121,213.40, 181,755.30 and 51,013.40

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Solution

The fourth proportional to 121,213.40, 181,755.30 and 51,013.40 is: 76,492.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,213.40 : 181,755.30 = 51,013.40 : x
  2. Step 2: Convert to fraction form
    121,213.40/181,755.30 = 51,013.40/x
  3. Step 3: Cross multiply
    121,213.40x = 181,755.30 × 51,013.40
  4. Step 4: Simplify right side
    121,213.40x = 9,271,955,821.02
  5. Step 5: Solve for x
    x = 9,271,955,821.02/121,213.40
  6. Step 6: Final answer
    x = 76,492.83

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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.