Home / 102,961.51-142,080.30-57,631.87

Finding the Fourth Proportional to 102,961.51, 142,080.30 and 57,631.87

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Solution

The fourth proportional to 102,961.51, 142,080.30 and 57,631.87 is: 79,528.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,961.51 : 142,080.30 = 57,631.87 : x
  2. Step 2: Convert to fraction form
    102,961.51/142,080.30 = 57,631.87/x
  3. Step 3: Cross multiply
    102,961.51x = 142,080.30 × 57,631.87
  4. Step 4: Simplify right side
    102,961.51x = 8,188,353,379.16
  5. Step 5: Solve for x
    x = 8,188,353,379.16/102,961.51
  6. Step 6: Final answer
    x = 79,528.30

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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.