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Finding the Fourth Proportional to 124,408.80, 186,656.40 and 54,338.40

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Solution

The fourth proportional to 124,408.80, 186,656.40 and 54,338.40 is: 81,526.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,408.80 : 186,656.40 = 54,338.40 : x
  2. Step 2: Convert to fraction form
    124,408.80/186,656.40 = 54,338.40/x
  3. Step 3: Cross multiply
    124,408.80x = 186,656.40 × 54,338.40
  4. Step 4: Simplify right side
    124,408.80x = 10,142,610,125.76
  5. Step 5: Solve for x
    x = 10,142,610,125.76/124,408.80
  6. Step 6: Final answer
    x = 81,526.47

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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.