Home / 145,816.20-218,286.90-137,165.40

Finding the Fourth Proportional to 145,816.20, 218,286.90 and 137,165.40

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Solution

The fourth proportional to 145,816.20, 218,286.90 and 137,165.40 is: 205,336.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,816.20 : 218,286.90 = 137,165.40 : x
  2. Step 2: Convert to fraction form
    145,816.20/218,286.90 = 137,165.40/x
  3. Step 3: Cross multiply
    145,816.20x = 218,286.90 × 137,165.40
  4. Step 4: Simplify right side
    145,816.20x = 29,941,409,953.26
  5. Step 5: Solve for x
    x = 29,941,409,953.26/145,816.20
  6. Step 6: Final answer
    x = 205,336.65

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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.