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Finding the Fourth Proportional to 136,089.48, 204,106.80 and 85,465.90

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Solution

The fourth proportional to 136,089.48, 204,106.80 and 85,465.90 is: 128,181.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,089.48 : 204,106.80 = 85,465.90 : x
  2. Step 2: Convert to fraction form
    136,089.48/204,106.80 = 85,465.90/x
  3. Step 3: Cross multiply
    136,089.48x = 204,106.80 × 85,465.90
  4. Step 4: Simplify right side
    136,089.48x = 17,444,170,337.59
  5. Step 5: Solve for x
    x = 17,444,170,337.59/136,089.48
  6. Step 6: Final answer
    x = 128,181.62

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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.