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Finding the Fourth Proportional to 172,935.20, 238,703.76 and 101,338.29

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Solution

The fourth proportional to 172,935.20, 238,703.76 and 101,338.29 is: 139,878.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,935.20 : 238,703.76 = 101,338.29 : x
  2. Step 2: Convert to fraction form
    172,935.20/238,703.76 = 101,338.29/x
  3. Step 3: Cross multiply
    172,935.20x = 238,703.76 × 101,338.29
  4. Step 4: Simplify right side
    172,935.20x = 24,189,830,854.97
  5. Step 5: Solve for x
    x = 24,189,830,854.97/172,935.20
  6. Step 6: Final answer
    x = 139,878.00

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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.