Home / 145,108.48-217,709.76-71,184.64

Finding the Fourth Proportional to 145,108.48, 217,709.76 and 71,184.64

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Solution

The fourth proportional to 145,108.48, 217,709.76 and 71,184.64 is: 106,800.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,108.48 : 217,709.76 = 71,184.64 : x
  2. Step 2: Convert to fraction form
    145,108.48/217,709.76 = 71,184.64/x
  3. Step 3: Cross multiply
    145,108.48x = 217,709.76 × 71,184.64
  4. Step 4: Simplify right side
    145,108.48x = 15,497,590,890.09
  5. Step 5: Solve for x
    x = 15,497,590,890.09/145,108.48
  6. Step 6: Final answer
    x = 106,800.04

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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.