Home / 142,339.23-196,447.67-81,908.64

Finding the Fourth Proportional to 142,339.23, 196,447.67 and 81,908.64

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Solution

The fourth proportional to 142,339.23, 196,447.67 and 81,908.64 is: 113,045.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,339.23 : 196,447.67 = 81,908.64 : x
  2. Step 2: Convert to fraction form
    142,339.23/196,447.67 = 81,908.64/x
  3. Step 3: Cross multiply
    142,339.23x = 196,447.67 × 81,908.64
  4. Step 4: Simplify right side
    142,339.23x = 16,090,762,575.90
  5. Step 5: Solve for x
    x = 16,090,762,575.90/142,339.23
  6. Step 6: Final answer
    x = 113,045.17

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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.