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Finding the Fourth Proportional to 170,603.20, 256,115.40 and 107,423.20

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Solution

The fourth proportional to 170,603.20, 256,115.40 and 107,423.20 is: 161,267.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,603.20 : 256,115.40 = 107,423.20 : x
  2. Step 2: Convert to fraction form
    170,603.20/256,115.40 = 107,423.20/x
  3. Step 3: Cross multiply
    170,603.20x = 256,115.40 × 107,423.20
  4. Step 4: Simplify right side
    170,603.20x = 27,512,735,837.28
  5. Step 5: Solve for x
    x = 27,512,735,837.28/170,603.20
  6. Step 6: Final answer
    x = 161,267.41

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1.5x scale

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.