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Finding the Fourth Proportional to 113,730.25, 156,897.03 and 65,955.91

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Solution

The fourth proportional to 113,730.25, 156,897.03 and 65,955.91 is: 90,989.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,730.25 : 156,897.03 = 65,955.91 : x
  2. Step 2: Convert to fraction form
    113,730.25/156,897.03 = 65,955.91/x
  3. Step 3: Cross multiply
    113,730.25x = 156,897.03 × 65,955.91
  4. Step 4: Simplify right side
    113,730.25x = 10,348,286,389.95
  5. Step 5: Solve for x
    x = 10,348,286,389.95/113,730.25
  6. Step 6: Final answer
    x = 90,989.74

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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.