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Finding the Fourth Proportional to 172,981.34, 238,715.67 and 101,363.42

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Solution

The fourth proportional to 172,981.34, 238,715.67 and 101,363.42 is: 139,882.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,981.34 : 238,715.67 = 101,363.42 : x
  2. Step 2: Convert to fraction form
    172,981.34/238,715.67 = 101,363.42/x
  3. Step 3: Cross multiply
    172,981.34x = 238,715.67 × 101,363.42
  4. Step 4: Simplify right side
    172,981.34x = 24,197,036,718.79
  5. Step 5: Solve for x
    x = 24,197,036,718.79/172,981.34
  6. Step 6: Final answer
    x = 139,882.35

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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.