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Finding the Fourth Proportional to 103,638.67, 143,032.97 and 58,327.67

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Solution

The fourth proportional to 103,638.67, 143,032.97 and 58,327.67 is: 80,498.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,638.67 : 143,032.97 = 58,327.67 : x
  2. Step 2: Convert to fraction form
    103,638.67/143,032.97 = 58,327.67/x
  3. Step 3: Cross multiply
    103,638.67x = 143,032.97 × 58,327.67
  4. Step 4: Simplify right side
    103,638.67x = 8,342,779,873.28
  5. Step 5: Solve for x
    x = 8,342,779,873.28/103,638.67
  6. Step 6: Final answer
    x = 80,498.72

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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.