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Finding the Fourth Proportional to 128,840.58, 193,204.22 and 52,886.97

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Solution

The fourth proportional to 128,840.58, 193,204.22 and 52,886.97 is: 79,307.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,840.58 : 193,204.22 = 52,886.97 : x
  2. Step 2: Convert to fraction form
    128,840.58/193,204.22 = 52,886.97/x
  3. Step 3: Cross multiply
    128,840.58x = 193,204.22 × 52,886.97
  4. Step 4: Simplify right side
    128,840.58x = 10,217,985,522.58
  5. Step 5: Solve for x
    x = 10,217,985,522.58/128,840.58
  6. Step 6: Final answer
    x = 79,307.20

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1.5x scale

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.