Home / 103,465.45-142,786.53-58,143.29

Finding the Fourth Proportional to 103,465.45, 142,786.53 and 58,143.29

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Solution

The fourth proportional to 103,465.45, 142,786.53 and 58,143.29 is: 80,240.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,465.45 : 142,786.53 = 58,143.29 : x
  2. Step 2: Convert to fraction form
    103,465.45/142,786.53 = 58,143.29/x
  3. Step 3: Cross multiply
    103,465.45x = 142,786.53 × 58,143.29
  4. Step 4: Simplify right side
    103,465.45x = 8,302,077,907.95
  5. Step 5: Solve for x
    x = 8,302,077,907.95/103,465.45
  6. Step 6: Final answer
    x = 80,240.10

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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.