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Finding the Fourth Proportional to 105,590.97, 145,598.74 and 67,289.81

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Solution

The fourth proportional to 105,590.97, 145,598.74 and 67,289.81 is: 92,785.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,590.97 : 145,598.74 = 67,289.81 : x
  2. Step 2: Convert to fraction form
    105,590.97/145,598.74 = 67,289.81/x
  3. Step 3: Cross multiply
    105,590.97x = 145,598.74 × 67,289.81
  4. Step 4: Simplify right side
    105,590.97x = 9,797,310,654.62
  5. Step 5: Solve for x
    x = 9,797,310,654.62/105,590.97
  6. Step 6: Final answer
    x = 92,785.50

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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.