Home / 145,423.17-218,128.41-45,581.09

Finding the Fourth Proportional to 145,423.17, 218,128.41 and 45,581.09

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Solution

The fourth proportional to 145,423.17, 218,128.41 and 45,581.09 is: 68,369.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,423.17 : 218,128.41 = 45,581.09 : x
  2. Step 2: Convert to fraction form
    145,423.17/218,128.41 = 45,581.09/x
  3. Step 3: Cross multiply
    145,423.17x = 218,128.41 × 45,581.09
  4. Step 4: Simplify right side
    145,423.17x = 9,942,529,597.12
  5. Step 5: Solve for x
    x = 9,942,529,597.12/145,423.17
  6. Step 6: Final answer
    x = 68,369.64

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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.