Home / 91,364.40-137,176.20-56,372.40

Finding the Fourth Proportional to 91,364.40, 137,176.20 and 56,372.40

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Solution

The fourth proportional to 91,364.40, 137,176.20 and 56,372.40 is: 84,638.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,364.40 : 137,176.20 = 56,372.40 : x
  2. Step 2: Convert to fraction form
    91,364.40/137,176.20 = 56,372.40/x
  3. Step 3: Cross multiply
    91,364.40x = 137,176.20 × 56,372.40
  4. Step 4: Simplify right side
    91,364.40x = 7,732,951,616.88
  5. Step 5: Solve for x
    x = 7,732,951,616.88/91,364.40
  6. Step 6: Final answer
    x = 84,638.56

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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.