Home / 142,140.38-196,065.29-84,739.82

Finding the Fourth Proportional to 142,140.38, 196,065.29 and 84,739.82

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Solution

The fourth proportional to 142,140.38, 196,065.29 and 84,739.82 is: 116,888.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,140.38 : 196,065.29 = 84,739.82 : x
  2. Step 2: Convert to fraction form
    142,140.38/196,065.29 = 84,739.82/x
  3. Step 3: Cross multiply
    142,140.38x = 196,065.29 × 84,739.82
  4. Step 4: Simplify right side
    142,140.38x = 16,614,536,614.37
  5. Step 5: Solve for x
    x = 16,614,536,614.37/142,140.38
  6. Step 6: Final answer
    x = 116,888.23

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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.