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Finding the Fourth Proportional to 128,703.08, 193,055.76 and 52,843.34

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Solution

The fourth proportional to 128,703.08, 193,055.76 and 52,843.34 is: 79,265.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,703.08 : 193,055.76 = 52,843.34 : x
  2. Step 2: Convert to fraction form
    128,703.08/193,055.76 = 52,843.34/x
  3. Step 3: Cross multiply
    128,703.08x = 193,055.76 × 52,843.34
  4. Step 4: Simplify right side
    128,703.08x = 10,201,711,795.90
  5. Step 5: Solve for x
    x = 10,201,711,795.90/128,703.08
  6. Step 6: Final answer
    x = 79,265.48

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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.