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Finding the Fourth Proportional to 108,053.91, 148,935.92 and 72,230.85

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Solution

The fourth proportional to 108,053.91, 148,935.92 and 72,230.85 is: 99,559.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,053.91 : 148,935.92 = 72,230.85 : x
  2. Step 2: Convert to fraction form
    108,053.91/148,935.92 = 72,230.85/x
  3. Step 3: Cross multiply
    108,053.91x = 148,935.92 × 72,230.85
  4. Step 4: Simplify right side
    108,053.91x = 10,757,767,735.98
  5. Step 5: Solve for x
    x = 10,757,767,735.98/108,053.91
  6. Step 6: Final answer
    x = 99,559.26

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1.5x scale

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.