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Finding the Fourth Proportional to 169,581.12, 254,377.14 and 85,295.28

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Solution

The fourth proportional to 169,581.12, 254,377.14 and 85,295.28 is: 127,945.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,581.12 : 254,377.14 = 85,295.28 : x
  2. Step 2: Convert to fraction form
    169,581.12/254,377.14 = 85,295.28/x
  3. Step 3: Cross multiply
    169,581.12x = 254,377.14 × 85,295.28
  4. Step 4: Simplify right side
    169,581.12x = 21,697,169,381.90
  5. Step 5: Solve for x
    x = 21,697,169,381.90/169,581.12
  6. Step 6: Final answer
    x = 127,945.67

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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.