Home / 170,890.72-256,335.05-69,688.37

Finding the Fourth Proportional to 170,890.72, 256,335.05 and 69,688.37

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Solution

The fourth proportional to 170,890.72, 256,335.05 and 69,688.37 is: 104,532.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,890.72 : 256,335.05 = 69,688.37 : x
  2. Step 2: Convert to fraction form
    170,890.72/256,335.05 = 69,688.37/x
  3. Step 3: Cross multiply
    170,890.72x = 256,335.05 × 69,688.37
  4. Step 4: Simplify right side
    170,890.72x = 17,863,572,623.43
  5. Step 5: Solve for x
    x = 17,863,572,623.43/170,890.72
  6. Step 6: Final answer
    x = 104,532.14

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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.