Home / 142,967.12-197,293.16-79,303.28

Finding the Fourth Proportional to 142,967.12, 197,293.16 and 79,303.28

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Solution

The fourth proportional to 142,967.12, 197,293.16 and 79,303.28 is: 109,437.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,967.12 : 197,293.16 = 79,303.28 : x
  2. Step 2: Convert to fraction form
    142,967.12/197,293.16 = 79,303.28/x
  3. Step 3: Cross multiply
    142,967.12x = 197,293.16 × 79,303.28
  4. Step 4: Simplify right side
    142,967.12x = 15,645,994,709.56
  5. Step 5: Solve for x
    x = 15,645,994,709.56/142,967.12
  6. Step 6: Final answer
    x = 109,437.71

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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.