Home / 117,123.12-161,629.87-63,408.10

Finding the Fourth Proportional to 117,123.12, 161,629.87 and 63,408.10

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Solution

The fourth proportional to 117,123.12, 161,629.87 and 63,408.10 is: 87,503.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,123.12 : 161,629.87 = 63,408.10 : x
  2. Step 2: Convert to fraction form
    117,123.12/161,629.87 = 63,408.10/x
  3. Step 3: Cross multiply
    117,123.12x = 161,629.87 × 63,408.10
  4. Step 4: Simplify right side
    117,123.12x = 10,248,642,959.95
  5. Step 5: Solve for x
    x = 10,248,642,959.95/117,123.12
  6. Step 6: Final answer
    x = 87,503.16

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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.