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Finding the Fourth Proportional to 169,856.80, 254,979.60 and 99,775.60

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Solution

The fourth proportional to 169,856.80, 254,979.60 and 99,775.60 is: 149,777.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,856.80 : 254,979.60 = 99,775.60 : x
  2. Step 2: Convert to fraction form
    169,856.80/254,979.60 = 99,775.60/x
  3. Step 3: Cross multiply
    169,856.80x = 254,979.60 × 99,775.60
  4. Step 4: Simplify right side
    169,856.80x = 25,440,742,577.76
  5. Step 5: Solve for x
    x = 25,440,742,577.76/169,856.80
  6. Step 6: Final answer
    x = 149,777.59

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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.