Home / 117,134.03-161,488.64-87,938.80

Finding the Fourth Proportional to 117,134.03, 161,488.64 and 87,938.80

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Solution

The fourth proportional to 117,134.03, 161,488.64 and 87,938.80 is: 121,238.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,134.03 : 161,488.64 = 87,938.80 : x
  2. Step 2: Convert to fraction form
    117,134.03/161,488.64 = 87,938.80/x
  3. Step 3: Cross multiply
    117,134.03x = 161,488.64 × 87,938.80
  4. Step 4: Simplify right side
    117,134.03x = 14,201,116,823.38
  5. Step 5: Solve for x
    x = 14,201,116,823.38/117,134.03
  6. Step 6: Final answer
    x = 121,238.18

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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.