Home / 145,310.42-217,969.73-40,129.40

Finding the Fourth Proportional to 145,310.42, 217,969.73 and 40,129.40

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Solution

The fourth proportional to 145,310.42, 217,969.73 and 40,129.40 is: 60,195.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,310.42 : 217,969.73 = 40,129.40 : x
  2. Step 2: Convert to fraction form
    145,310.42/217,969.73 = 40,129.40/x
  3. Step 3: Cross multiply
    145,310.42x = 217,969.73 × 40,129.40
  4. Step 4: Simplify right side
    145,310.42x = 8,746,993,192.57
  5. Step 5: Solve for x
    x = 8,746,993,192.57/145,310.42
  6. Step 6: Final answer
    x = 60,195.23

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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.