Home / 142,062.85-196,051.31-80,807.45

Finding the Fourth Proportional to 142,062.85, 196,051.31 and 80,807.45

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Solution

The fourth proportional to 142,062.85, 196,051.31 and 80,807.45 is: 111,516.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,062.85 : 196,051.31 = 80,807.45 : x
  2. Step 2: Convert to fraction form
    142,062.85/196,051.31 = 80,807.45/x
  3. Step 3: Cross multiply
    142,062.85x = 196,051.31 × 80,807.45
  4. Step 4: Simplify right side
    142,062.85x = 15,842,406,271.29
  5. Step 5: Solve for x
    x = 15,842,406,271.29/142,062.85
  6. Step 6: Final answer
    x = 111,516.89

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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.