Home / 117,484.10-162,212.31-72,222.77

Finding the Fourth Proportional to 117,484.10, 162,212.31 and 72,222.77

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Solution

The fourth proportional to 117,484.10, 162,212.31 and 72,222.77 is: 99,719.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,484.10 : 162,212.31 = 72,222.77 : x
  2. Step 2: Convert to fraction form
    117,484.10/162,212.31 = 72,222.77/x
  3. Step 3: Cross multiply
    117,484.10x = 162,212.31 × 72,222.77
  4. Step 4: Simplify right side
    117,484.10x = 11,715,422,356.30
  5. Step 5: Solve for x
    x = 11,715,422,356.30/117,484.10
  6. Step 6: Final answer
    x = 99,719.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.