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Finding the Fourth Proportional to 105,495.40, 158,243.76 and 43,165.92

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Solution

The fourth proportional to 105,495.40, 158,243.76 and 43,165.92 is: 64,749.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,495.40 : 158,243.76 = 43,165.92 : x
  2. Step 2: Convert to fraction form
    105,495.40/158,243.76 = 43,165.92/x
  3. Step 3: Cross multiply
    105,495.40x = 158,243.76 × 43,165.92
  4. Step 4: Simplify right side
    105,495.40x = 6,830,737,484.66
  5. Step 5: Solve for x
    x = 6,830,737,484.66/105,495.40
  6. Step 6: Final answer
    x = 64,749.15

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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.