Home / 103,680.20-143,078.52-58,358.51

Finding the Fourth Proportional to 103,680.20, 143,078.52 and 58,358.51

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Solution

The fourth proportional to 103,680.20, 143,078.52 and 58,358.51 is: 80,534.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,680.20 : 143,078.52 = 58,358.51 : x
  2. Step 2: Convert to fraction form
    103,680.20/143,078.52 = 58,358.51/x
  3. Step 3: Cross multiply
    103,680.20x = 143,078.52 × 58,358.51
  4. Step 4: Simplify right side
    103,680.20x = 8,349,849,240.21
  5. Step 5: Solve for x
    x = 8,349,849,240.21/103,680.20
  6. Step 6: Final answer
    x = 80,534.66

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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.