Home / 209,159,004.32-313,623,309.68-86,309,397.12

Finding the Fourth Proportional to 209,159,004.32, 313,623,309.68 and 86,309,397.12

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Solution

The fourth proportional to 209,159,004.32, 313,623,309.68 and 86,309,397.12 is: 129,416,559.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,159,004.32 : 313,623,309.68 = 86,309,397.12 : x
  2. Step 2: Convert to fraction form
    209,159,004.32/313,623,309.68 = 86,309,397.12/x
  3. Step 3: Cross multiply
    209,159,004.32x = 313,623,309.68 × 86,309,397.12
  4. Step 4: Simplify right side
    209,159,004.32x = 27,068,638,781,259,864
  5. Step 5: Solve for x
    x = 27,068,638,781,259,864/209,159,004.32
  6. Step 6: Final answer
    x = 129,416,559.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.