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Finding the Fourth Proportional to 128,851.85, 193,230.38 and 44,590.38

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Solution

The fourth proportional to 128,851.85, 193,230.38 and 44,590.38 is: 66,869.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,851.85 : 193,230.38 = 44,590.38 : x
  2. Step 2: Convert to fraction form
    128,851.85/193,230.38 = 44,590.38/x
  3. Step 3: Cross multiply
    128,851.85x = 193,230.38 × 44,590.38
  4. Step 4: Simplify right side
    128,851.85x = 8,616,216,071.74
  5. Step 5: Solve for x
    x = 8,616,216,071.74/128,851.85
  6. Step 6: Final answer
    x = 66,869.17

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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.