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Finding the Fourth Proportional to 113,411.48, 156,497.67 and 65,668.05

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Solution

The fourth proportional to 113,411.48, 156,497.67 and 65,668.05 is: 90,616.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,411.48 : 156,497.67 = 65,668.05 : x
  2. Step 2: Convert to fraction form
    113,411.48/156,497.67 = 65,668.05/x
  3. Step 3: Cross multiply
    113,411.48x = 156,497.67 × 65,668.05
  4. Step 4: Simplify right side
    113,411.48x = 10,276,896,818.44
  5. Step 5: Solve for x
    x = 10,276,896,818.44/113,411.48
  6. Step 6: Final answer
    x = 90,616.02

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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.