Home / 117,515.91-161,548.32-101,103.21

Finding the Fourth Proportional to 117,515.91, 161,548.32 and 101,103.21

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Solution

The fourth proportional to 117,515.91, 161,548.32 and 101,103.21 is: 138,985.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,515.91 : 161,548.32 = 101,103.21 : x
  2. Step 2: Convert to fraction form
    117,515.91/161,548.32 = 101,103.21/x
  3. Step 3: Cross multiply
    117,515.91x = 161,548.32 × 101,103.21
  4. Step 4: Simplify right side
    117,515.91x = 16,333,053,722.11
  5. Step 5: Solve for x
    x = 16,333,053,722.11/117,515.91
  6. Step 6: Final answer
    x = 138,985.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.