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Finding the Fourth Proportional to 193,373.16, 266,853.80 and 108,490

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Solution

The fourth proportional to 193,373.16, 266,853.80 and 108,490 is: 149,715.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,373.16 : 266,853.80 = 108,490 : x
  2. Step 2: Convert to fraction form
    193,373.16/266,853.80 = 108,490/x
  3. Step 3: Cross multiply
    193,373.16x = 266,853.80 × 108,490
  4. Step 4: Simplify right side
    193,373.16x = 28,950,968,762
  5. Step 5: Solve for x
    x = 28,950,968,762/193,373.16
  6. Step 6: Final answer
    x = 149,715.55

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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.