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Finding the Fourth Proportional to 101,179.72, 139,638.90 and 63,466.12

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Solution

The fourth proportional to 101,179.72, 139,638.90 and 63,466.12 is: 87,590.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,179.72 : 139,638.90 = 63,466.12 : x
  2. Step 2: Convert to fraction form
    101,179.72/139,638.90 = 63,466.12/x
  3. Step 3: Cross multiply
    101,179.72x = 139,638.90 × 63,466.12
  4. Step 4: Simplify right side
    101,179.72x = 8,862,339,184.07
  5. Step 5: Solve for x
    x = 8,862,339,184.07/101,179.72
  6. Step 6: Final answer
    x = 87,590.07

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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.