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Finding the Fourth Proportional to 108,763.70, 163,153.32 and 45,520.14

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Solution

The fourth proportional to 108,763.70, 163,153.32 and 45,520.14 is: 68,283.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,763.70 : 163,153.32 = 45,520.14 : x
  2. Step 2: Convert to fraction form
    108,763.70/163,153.32 = 45,520.14/x
  3. Step 3: Cross multiply
    108,763.70x = 163,153.32 × 45,520.14
  4. Step 4: Simplify right side
    108,763.70x = 7,426,761,967.86
  5. Step 5: Solve for x
    x = 7,426,761,967.86/108,763.70
  6. Step 6: Final answer
    x = 68,283.47

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1.5x scale

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.