Home / 102,478.62-141,421.26-57,159.54

Finding the Fourth Proportional to 102,478.62, 141,421.26 and 57,159.54

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Solution

The fourth proportional to 102,478.62, 141,421.26 and 57,159.54 is: 78,880.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,478.62 : 141,421.26 = 57,159.54 : x
  2. Step 2: Convert to fraction form
    102,478.62/141,421.26 = 57,159.54/x
  3. Step 3: Cross multiply
    102,478.62x = 141,421.26 × 57,159.54
  4. Step 4: Simplify right side
    102,478.62x = 8,083,574,167.82
  5. Step 5: Solve for x
    x = 8,083,574,167.82/102,478.62
  6. Step 6: Final answer
    x = 78,880.59

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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.