Home / 280,837.76-421,173.41-81,159.93

Finding the Fourth Proportional to 280,837.76, 421,173.41 and 81,159.93

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Solution

The fourth proportional to 280,837.76, 421,173.41 and 81,159.93 is: 121,715.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,837.76 : 421,173.41 = 81,159.93 : x
  2. Step 2: Convert to fraction form
    280,837.76/421,173.41 = 81,159.93/x
  3. Step 3: Cross multiply
    280,837.76x = 421,173.41 × 81,159.93
  4. Step 4: Simplify right side
    280,837.76x = 34,182,404,067.66
  5. Step 5: Solve for x
    x = 34,182,404,067.66/280,837.76
  6. Step 6: Final answer
    x = 121,715.84

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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.