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Finding the Fourth Proportional to 172,805.80, 238,486.18 and 97,359.40

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Solution

The fourth proportional to 172,805.80, 238,486.18 and 97,359.40 is: 134,363.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,805.80 : 238,486.18 = 97,359.40 : x
  2. Step 2: Convert to fraction form
    172,805.80/238,486.18 = 97,359.40/x
  3. Step 3: Cross multiply
    172,805.80x = 238,486.18 × 97,359.40
  4. Step 4: Simplify right side
    172,805.80x = 23,218,871,393.09
  5. Step 5: Solve for x
    x = 23,218,871,393.09/172,805.80
  6. Step 6: Final answer
    x = 134,363.96

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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.