Home / 120,283,809.72-165,991,657.26-65,279,666.22

Finding the Fourth Proportional to 120,283,809.72, 165,991,657.26 and 65,279,666.22

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Solution

The fourth proportional to 120,283,809.72, 165,991,657.26 and 65,279,666.22 is: 90,085,939.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,283,809.72 : 165,991,657.26 = 65,279,666.22 : x
  2. Step 2: Convert to fraction form
    120,283,809.72/165,991,657.26 = 65,279,666.22/x
  3. Step 3: Cross multiply
    120,283,809.72x = 165,991,657.26 × 65,279,666.22
  4. Step 4: Simplify right side
    120,283,809.72x = 10,835,879,981,237,438
  5. Step 5: Solve for x
    x = 10,835,879,981,237,438/120,283,809.72
  6. Step 6: Final answer
    x = 90,085,939.30

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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.