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Finding the Fourth Proportional to 170,864.10, 256,296.15 and 111,881.70

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Solution

The fourth proportional to 170,864.10, 256,296.15 and 111,881.70 is: 167,822.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,864.10 : 256,296.15 = 111,881.70 : x
  2. Step 2: Convert to fraction form
    170,864.10/256,296.15 = 111,881.70/x
  3. Step 3: Cross multiply
    170,864.10x = 256,296.15 × 111,881.70
  4. Step 4: Simplify right side
    170,864.10x = 28,674,848,965.46
  5. Step 5: Solve for x
    x = 28,674,848,965.46/170,864.10
  6. Step 6: Final answer
    x = 167,822.55

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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.