Home / 102,889.21-141,980.43-57,559.36

Finding the Fourth Proportional to 102,889.21, 141,980.43 and 57,559.36

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Solution

The fourth proportional to 102,889.21, 141,980.43 and 57,559.36 is: 79,428.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,889.21 : 141,980.43 = 57,559.36 : x
  2. Step 2: Convert to fraction form
    102,889.21/141,980.43 = 57,559.36/x
  3. Step 3: Cross multiply
    102,889.21x = 141,980.43 × 57,559.36
  4. Step 4: Simplify right side
    102,889.21x = 8,172,302,683.32
  5. Step 5: Solve for x
    x = 8,172,302,683.32/102,889.21
  6. Step 6: Final answer
    x = 79,428.18

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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.