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Finding the Fourth Proportional to 113,511.70, 156,622.26 and 65,762.20

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Solution

The fourth proportional to 113,511.70, 156,622.26 and 65,762.20 is: 90,738.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,511.70 : 156,622.26 = 65,762.20 : x
  2. Step 2: Convert to fraction form
    113,511.70/156,622.26 = 65,762.20/x
  3. Step 3: Cross multiply
    113,511.70x = 156,622.26 × 65,762.20
  4. Step 4: Simplify right side
    113,511.70x = 10,299,824,386.57
  5. Step 5: Solve for x
    x = 10,299,824,386.57/113,511.70
  6. Step 6: Final answer
    x = 90,738.00

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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.