Home / 145,089.20-217,546.32-66,269.72

Finding the Fourth Proportional to 145,089.20, 217,546.32 and 66,269.72

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Solution

The fourth proportional to 145,089.20, 217,546.32 and 66,269.72 is: 99,364.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,089.20 : 217,546.32 = 66,269.72 : x
  2. Step 2: Convert to fraction form
    145,089.20/217,546.32 = 66,269.72/x
  3. Step 3: Cross multiply
    145,089.20x = 217,546.32 × 66,269.72
  4. Step 4: Simplify right side
    145,089.20x = 14,416,733,713.43
  5. Step 5: Solve for x
    x = 14,416,733,713.43/145,089.20
  6. Step 6: Final answer
    x = 99,364.62

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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.