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Finding the Fourth Proportional to 136,796.04, 188,781.72 and 85,810.92

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Solution

The fourth proportional to 136,796.04, 188,781.72 and 85,810.92 is: 118,421.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,796.04 : 188,781.72 = 85,810.92 : x
  2. Step 2: Convert to fraction form
    136,796.04/188,781.72 = 85,810.92/x
  3. Step 3: Cross multiply
    136,796.04x = 188,781.72 × 85,810.92
  4. Step 4: Simplify right side
    136,796.04x = 16,199,533,072.38
  5. Step 5: Solve for x
    x = 16,199,533,072.38/136,796.04
  6. Step 6: Final answer
    x = 118,421.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.