Home / 151,345,920.65-208,857,369.29-81,731,295.41

Finding the Fourth Proportional to 151,345,920.65, 208,857,369.29 and 81,731,295.41

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Solution

The fourth proportional to 151,345,920.65, 208,857,369.29 and 81,731,295.41 is: 112,789,187.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,345,920.65 : 208,857,369.29 = 81,731,295.41 : x
  2. Step 2: Convert to fraction form
    151,345,920.65/208,857,369.29 = 81,731,295.41/x
  3. Step 3: Cross multiply
    151,345,920.65x = 208,857,369.29 × 81,731,295.41
  4. Step 4: Simplify right side
    151,345,920.65x = 17,070,183,346,543,508
  5. Step 5: Solve for x
    x = 17,070,183,346,543,508/151,345,920.65
  6. Step 6: Final answer
    x = 112,789,187.01

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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.