Home / 142,193.12-196,226.64-77,663.25

Finding the Fourth Proportional to 142,193.12, 196,226.64 and 77,663.25

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Solution

The fourth proportional to 142,193.12, 196,226.64 and 77,663.25 is: 107,175.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,193.12 : 196,226.64 = 77,663.25 : x
  2. Step 2: Convert to fraction form
    142,193.12/196,226.64 = 77,663.25/x
  3. Step 3: Cross multiply
    142,193.12x = 196,226.64 × 77,663.25
  4. Step 4: Simplify right side
    142,193.12x = 15,239,598,598.98
  5. Step 5: Solve for x
    x = 15,239,598,598.98/142,193.12
  6. Step 6: Final answer
    x = 107,175.36

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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.