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Finding the Fourth Proportional to 136,242.90, 188,019.54 and 85,239.27

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Solution

The fourth proportional to 136,242.90, 188,019.54 and 85,239.27 is: 117,632.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,242.90 : 188,019.54 = 85,239.27 : x
  2. Step 2: Convert to fraction form
    136,242.90/188,019.54 = 85,239.27/x
  3. Step 3: Cross multiply
    136,242.90x = 188,019.54 × 85,239.27
  4. Step 4: Simplify right side
    136,242.90x = 16,026,648,335.34
  5. Step 5: Solve for x
    x = 16,026,648,335.34/136,242.90
  6. Step 6: Final answer
    x = 117,632.91

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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.