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Finding the Fourth Proportional to 104,339.72, 143,986.20 and 58,398.68

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Solution

The fourth proportional to 104,339.72, 143,986.20 and 58,398.68 is: 80,588.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,339.72 : 143,986.20 = 58,398.68 : x
  2. Step 2: Convert to fraction form
    104,339.72/143,986.20 = 58,398.68/x
  3. Step 3: Cross multiply
    104,339.72x = 143,986.20 × 58,398.68
  4. Step 4: Simplify right side
    104,339.72x = 8,408,604,018.22
  5. Step 5: Solve for x
    x = 8,408,604,018.22/104,339.72
  6. Step 6: Final answer
    x = 80,588.72

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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.