Home / 131,319.96-196,961.28-74,977.20

Finding the Fourth Proportional to 131,319.96, 196,961.28 and 74,977.20

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Solution

The fourth proportional to 131,319.96, 196,961.28 and 74,977.20 is: 112,455.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,319.96 : 196,961.28 = 74,977.20 : x
  2. Step 2: Convert to fraction form
    131,319.96/196,961.28 = 74,977.20/x
  3. Step 3: Cross multiply
    131,319.96x = 196,961.28 × 74,977.20
  4. Step 4: Simplify right side
    131,319.96x = 14,767,605,282.82
  5. Step 5: Solve for x
    x = 14,767,605,282.82/131,319.96
  6. Step 6: Final answer
    x = 112,455.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.