Home / 427,688.10-641,532.15-112,176.90

Finding the Fourth Proportional to 427,688.10, 641,532.15 and 112,176.90

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Solution

The fourth proportional to 427,688.10, 641,532.15 and 112,176.90 is: 168,265.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,688.10 : 641,532.15 = 112,176.90 : x
  2. Step 2: Convert to fraction form
    427,688.10/641,532.15 = 112,176.90/x
  3. Step 3: Cross multiply
    427,688.10x = 641,532.15 × 112,176.90
  4. Step 4: Simplify right side
    427,688.10x = 71,965,087,837.34
  5. Step 5: Solve for x
    x = 71,965,087,837.34/427,688.10
  6. Step 6: Final answer
    x = 168,265.35

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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.