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Finding the Fourth Proportional to 145,808.76, 218,635.38 and 75,513.72

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Solution

The fourth proportional to 145,808.76, 218,635.38 and 75,513.72 is: 113,230.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,808.76 : 218,635.38 = 75,513.72 : x
  2. Step 2: Convert to fraction form
    145,808.76/218,635.38 = 75,513.72/x
  3. Step 3: Cross multiply
    145,808.76x = 218,635.38 × 75,513.72
  4. Step 4: Simplify right side
    145,808.76x = 16,509,970,867.41
  5. Step 5: Solve for x
    x = 16,509,970,867.41/145,808.76
  6. Step 6: Final answer
    x = 113,230.31

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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.