Home / 102,829.20-141,911.52-57,511.40

Finding the Fourth Proportional to 102,829.20, 141,911.52 and 57,511.40

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Solution

The fourth proportional to 102,829.20, 141,911.52 and 57,511.40 is: 79,369.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,829.20 : 141,911.52 = 57,511.40 : x
  2. Step 2: Convert to fraction form
    102,829.20/141,911.52 = 57,511.40/x
  3. Step 3: Cross multiply
    102,829.20x = 141,911.52 × 57,511.40
  4. Step 4: Simplify right side
    102,829.20x = 8,161,530,191.33
  5. Step 5: Solve for x
    x = 8,161,530,191.33/102,829.20
  6. Step 6: Final answer
    x = 79,369.77

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1.5x scale

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.