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Finding the Fourth Proportional to 116,035.39, 173,830.74 and 78,530.77

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Solution

The fourth proportional to 116,035.39, 173,830.74 and 78,530.77 is: 117,645.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,035.39 : 173,830.74 = 78,530.77 : x
  2. Step 2: Convert to fraction form
    116,035.39/173,830.74 = 78,530.77/x
  3. Step 3: Cross multiply
    116,035.39x = 173,830.74 × 78,530.77
  4. Step 4: Simplify right side
    116,035.39x = 13,651,061,861.87
  5. Step 5: Solve for x
    x = 13,651,061,861.87/116,035.39
  6. Step 6: Final answer
    x = 117,645.68

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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.