Home / 139,953,856.65-193,174,736.76-81,235,439.01

Finding the Fourth Proportional to 139,953,856.65, 193,174,736.76 and 81,235,439.01

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Solution

The fourth proportional to 139,953,856.65, 193,174,736.76 and 81,235,439.01 is: 112,127,203.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,953,856.65 : 193,174,736.76 = 81,235,439.01 : x
  2. Step 2: Convert to fraction form
    139,953,856.65/193,174,736.76 = 81,235,439.01/x
  3. Step 3: Cross multiply
    139,953,856.65x = 193,174,736.76 × 81,235,439.01
  4. Step 4: Simplify right side
    139,953,856.65x = 15,692,634,546,339,786
  5. Step 5: Solve for x
    x = 15,692,634,546,339,786/139,953,856.65
  6. Step 6: Final answer
    x = 112,127,203.37

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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.