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Finding the Fourth Proportional to 173,379.18, 260,143.90 and 61,139.60

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Solution

The fourth proportional to 173,379.18, 260,143.90 and 61,139.60 is: 91,735.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,379.18 : 260,143.90 = 61,139.60 : x
  2. Step 2: Convert to fraction form
    173,379.18/260,143.90 = 61,139.60/x
  3. Step 3: Cross multiply
    173,379.18x = 260,143.90 × 61,139.60
  4. Step 4: Simplify right side
    173,379.18x = 15,905,092,534.87
  5. Step 5: Solve for x
    x = 15,905,092,534.87/173,379.18
  6. Step 6: Final answer
    x = 91,735.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.