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Finding the Fourth Proportional to 138,484.04, 191,108.04 and 74,821.82

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Solution

The fourth proportional to 138,484.04, 191,108.04 and 74,821.82 is: 103,254.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,484.04 : 191,108.04 = 74,821.82 : x
  2. Step 2: Convert to fraction form
    138,484.04/191,108.04 = 74,821.82/x
  3. Step 3: Cross multiply
    138,484.04x = 191,108.04 × 74,821.82
  4. Step 4: Simplify right side
    138,484.04x = 14,299,051,369.43
  5. Step 5: Solve for x
    x = 14,299,051,369.43/138,484.04
  6. Step 6: Final answer
    x = 103,254.15

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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.