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Finding the Fourth Proportional to 103,457.80, 155,186.70 and 92,304.10

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Solution

The fourth proportional to 103,457.80, 155,186.70 and 92,304.10 is: 138,456.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,457.80 : 155,186.70 = 92,304.10 : x
  2. Step 2: Convert to fraction form
    103,457.80/155,186.70 = 92,304.10/x
  3. Step 3: Cross multiply
    103,457.80x = 155,186.70 × 92,304.10
  4. Step 4: Simplify right side
    103,457.80x = 14,324,368,675.47
  5. Step 5: Solve for x
    x = 14,324,368,675.47/103,457.80
  6. Step 6: Final answer
    x = 138,456.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.