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Finding the Fourth Proportional to 125,998.80, 189,041.40 and 55,928.40

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Solution

The fourth proportional to 125,998.80, 189,041.40 and 55,928.40 is: 83,911.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,998.80 : 189,041.40 = 55,928.40 : x
  2. Step 2: Convert to fraction form
    125,998.80/189,041.40 = 55,928.40/x
  3. Step 3: Cross multiply
    125,998.80x = 189,041.40 × 55,928.40
  4. Step 4: Simplify right side
    125,998.80x = 10,572,783,035.76
  5. Step 5: Solve for x
    x = 10,572,783,035.76/125,998.80
  6. Step 6: Final answer
    x = 83,911.78

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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.