Home / 139,953,845.64-193,174,721.57-81,235,428.01

Finding the Fourth Proportional to 139,953,845.64, 193,174,721.57 and 81,235,428.01

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Solution

The fourth proportional to 139,953,845.64, 193,174,721.57 and 81,235,428.01 is: 112,127,188.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,953,845.64 : 193,174,721.57 = 81,235,428.01 : x
  2. Step 2: Convert to fraction form
    139,953,845.64/193,174,721.57 = 81,235,428.01/x
  3. Step 3: Cross multiply
    139,953,845.64x = 193,174,721.57 × 81,235,428.01
  4. Step 4: Simplify right side
    139,953,845.64x = 15,692,631,187,451,530
  5. Step 5: Solve for x
    x = 15,692,631,187,451,530/139,953,845.64
  6. Step 6: Final answer
    x = 112,127,188.19

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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.