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Finding the Fourth Proportional to 136,000.72, 187,602.80 and 84,924.76

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Solution

The fourth proportional to 136,000.72, 187,602.80 and 84,924.76 is: 117,147.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,000.72 : 187,602.80 = 84,924.76 : x
  2. Step 2: Convert to fraction form
    136,000.72/187,602.80 = 84,924.76/x
  3. Step 3: Cross multiply
    136,000.72x = 187,602.80 × 84,924.76
  4. Step 4: Simplify right side
    136,000.72x = 15,932,122,765.33
  5. Step 5: Solve for x
    x = 15,932,122,765.33/136,000.72
  6. Step 6: Final answer
    x = 117,147.34

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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.