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Finding the Fourth Proportional to 124,410.80, 186,659.40 and 54,340.40

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Solution

The fourth proportional to 124,410.80, 186,659.40 and 54,340.40 is: 81,529.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,410.80 : 186,659.40 = 54,340.40 : x
  2. Step 2: Convert to fraction form
    124,410.80/186,659.40 = 54,340.40/x
  3. Step 3: Cross multiply
    124,410.80x = 186,659.40 × 54,340.40
  4. Step 4: Simplify right side
    124,410.80x = 10,143,146,459.76
  5. Step 5: Solve for x
    x = 10,143,146,459.76/124,410.80
  6. Step 6: Final answer
    x = 81,529.47

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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.