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Finding the Fourth Proportional to 169,778.79, 254,280.42 and 81,095.02

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Solution

The fourth proportional to 169,778.79, 254,280.42 and 81,095.02 is: 121,457.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,778.79 : 254,280.42 = 81,095.02 : x
  2. Step 2: Convert to fraction form
    169,778.79/254,280.42 = 81,095.02/x
  3. Step 3: Cross multiply
    169,778.79x = 254,280.42 × 81,095.02
  4. Step 4: Simplify right side
    169,778.79x = 20,620,875,109.81
  5. Step 5: Solve for x
    x = 20,620,875,109.81/169,778.79
  6. Step 6: Final answer
    x = 121,457.31

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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.