Home / 102,405.60-141,322.32-57,090.96

Finding the Fourth Proportional to 102,405.60, 141,322.32 and 57,090.96

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Solution

The fourth proportional to 102,405.60, 141,322.32 and 57,090.96 is: 78,786.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,405.60 : 141,322.32 = 57,090.96 : x
  2. Step 2: Convert to fraction form
    102,405.60/141,322.32 = 57,090.96/x
  3. Step 3: Cross multiply
    102,405.60x = 141,322.32 × 57,090.96
  4. Step 4: Simplify right side
    102,405.60x = 8,068,226,918.23
  5. Step 5: Solve for x
    x = 8,068,226,918.23/102,405.60
  6. Step 6: Final answer
    x = 78,786.97

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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.