Home / 208,112,555.53-287,172,155.64-115,269,812.83

Finding the Fourth Proportional to 208,112,555.53, 287,172,155.64 and 115,269,812.83

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Solution

The fourth proportional to 208,112,555.53, 287,172,155.64 and 115,269,812.83 is: 159,059,507.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,112,555.53 : 287,172,155.64 = 115,269,812.83 : x
  2. Step 2: Convert to fraction form
    208,112,555.53/287,172,155.64 = 115,269,812.83/x
  3. Step 3: Cross multiply
    208,112,555.53x = 287,172,155.64 × 115,269,812.83
  4. Step 4: Simplify right side
    208,112,555.53x = 33,102,280,630,610,428
  5. Step 5: Solve for x
    x = 33,102,280,630,610,428/208,112,555.53
  6. Step 6: Final answer
    x = 159,059,507.71

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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.