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Finding the Fourth Proportional to 189,119.80, 260,999.58 and 108,573.40

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Solution

The fourth proportional to 189,119.80, 260,999.58 and 108,573.40 is: 149,839.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,119.80 : 260,999.58 = 108,573.40 : x
  2. Step 2: Convert to fraction form
    189,119.80/260,999.58 = 108,573.40/x
  3. Step 3: Cross multiply
    189,119.80x = 260,999.58 × 108,573.40
  4. Step 4: Simplify right side
    189,119.80x = 28,337,611,799.17
  5. Step 5: Solve for x
    x = 28,337,611,799.17/189,119.80
  6. Step 6: Final answer
    x = 149,839.48

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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.