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Finding the Fourth Proportional to 172,292.21, 237,728.40 and 100,658.39

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Solution

The fourth proportional to 172,292.21, 237,728.40 and 100,658.39 is: 138,888.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,292.21 : 237,728.40 = 100,658.39 : x
  2. Step 2: Convert to fraction form
    172,292.21/237,728.40 = 100,658.39/x
  3. Step 3: Cross multiply
    172,292.21x = 237,728.40 × 100,658.39
  4. Step 4: Simplify right side
    172,292.21x = 23,929,358,001.28
  5. Step 5: Solve for x
    x = 23,929,358,001.28/172,292.21
  6. Step 6: Final answer
    x = 138,888.22

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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.