Home / 145,128.24-217,754.76-75,056.72

Finding the Fourth Proportional to 145,128.24, 217,754.76 and 75,056.72

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Solution

The fourth proportional to 145,128.24, 217,754.76 and 75,056.72 is: 112,617.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,128.24 : 217,754.76 = 75,056.72 : x
  2. Step 2: Convert to fraction form
    145,128.24/217,754.76 = 75,056.72/x
  3. Step 3: Cross multiply
    145,128.24x = 217,754.76 × 75,056.72
  4. Step 4: Simplify right side
    145,128.24x = 16,343,958,049.99
  5. Step 5: Solve for x
    x = 16,343,958,049.99/145,128.24
  6. Step 6: Final answer
    x = 112,617.35

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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.