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Finding the Fourth Proportional to 169,602.42, 254,409.02 and 85,316.52

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Solution

The fourth proportional to 169,602.42, 254,409.02 and 85,316.52 is: 127,977.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,602.42 : 254,409.02 = 85,316.52 : x
  2. Step 2: Convert to fraction form
    169,602.42/254,409.02 = 85,316.52/x
  3. Step 3: Cross multiply
    169,602.42x = 254,409.02 × 85,316.52
  4. Step 4: Simplify right side
    169,602.42x = 21,705,292,243.01
  5. Step 5: Solve for x
    x = 21,705,292,243.01/169,602.42
  6. Step 6: Final answer
    x = 127,977.49

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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.