Home / 121,997.28-182,650.80-77,513.76

Finding the Fourth Proportional to 121,997.28, 182,650.80 and 77,513.76

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Solution

The fourth proportional to 121,997.28, 182,650.80 and 77,513.76 is: 116,051.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,997.28 : 182,650.80 = 77,513.76 : x
  2. Step 2: Convert to fraction form
    121,997.28/182,650.80 = 77,513.76/x
  3. Step 3: Cross multiply
    121,997.28x = 182,650.80 × 77,513.76
  4. Step 4: Simplify right side
    121,997.28x = 14,157,950,275.01
  5. Step 5: Solve for x
    x = 14,157,950,275.01/121,997.28
  6. Step 6: Final answer
    x = 116,051.36

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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.