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Finding the Fourth Proportional to 188,561.40, 260,140.50 and 107,945.46

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Solution

The fourth proportional to 188,561.40, 260,140.50 and 107,945.46 is: 148,922.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,561.40 : 260,140.50 = 107,945.46 : x
  2. Step 2: Convert to fraction form
    188,561.40/260,140.50 = 107,945.46/x
  3. Step 3: Cross multiply
    188,561.40x = 260,140.50 × 107,945.46
  4. Step 4: Simplify right side
    188,561.40x = 28,080,985,937.13
  5. Step 5: Solve for x
    x = 28,080,985,937.13/188,561.40
  6. Step 6: Final answer
    x = 148,922.24

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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.