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Finding the Fourth Proportional to 113,730.77, 156,897.70 and 65,956.43

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Solution

The fourth proportional to 113,730.77, 156,897.70 and 65,956.43 is: 90,990.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,730.77 : 156,897.70 = 65,956.43 : x
  2. Step 2: Convert to fraction form
    113,730.77/156,897.70 = 65,956.43/x
  3. Step 3: Cross multiply
    113,730.77x = 156,897.70 × 65,956.43
  4. Step 4: Simplify right side
    113,730.77x = 10,348,412,167.21
  5. Step 5: Solve for x
    x = 10,348,412,167.21/113,730.77
  6. Step 6: Final answer
    x = 90,990.43

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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.