Home / 142,485.28-196,631.75-82,066.77

Finding the Fourth Proportional to 142,485.28, 196,631.75 and 82,066.77

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Solution

The fourth proportional to 142,485.28, 196,631.75 and 82,066.77 is: 113,253.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,485.28 : 196,631.75 = 82,066.77 : x
  2. Step 2: Convert to fraction form
    142,485.28/196,631.75 = 82,066.77/x
  3. Step 3: Cross multiply
    142,485.28x = 196,631.75 × 82,066.77
  4. Step 4: Simplify right side
    142,485.28x = 16,136,932,807.11
  5. Step 5: Solve for x
    x = 16,136,932,807.11/142,485.28
  6. Step 6: Final answer
    x = 113,253.33

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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.