Home / 153,309.03-211,573.42-85,330.35

Finding the Fourth Proportional to 153,309.03, 211,573.42 and 85,330.35

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Solution

The fourth proportional to 153,309.03, 211,573.42 and 85,330.35 is: 117,759.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,309.03 : 211,573.42 = 85,330.35 : x
  2. Step 2: Convert to fraction form
    153,309.03/211,573.42 = 85,330.35/x
  3. Step 3: Cross multiply
    153,309.03x = 211,573.42 × 85,330.35
  4. Step 4: Simplify right side
    153,309.03x = 18,053,633,979.30
  5. Step 5: Solve for x
    x = 18,053,633,979.30/153,309.03
  6. Step 6: Final answer
    x = 117,759.76

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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.