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Finding the Fourth Proportional to 91,863.60, 137,795.40 and 77,101.35

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Solution

The fourth proportional to 91,863.60, 137,795.40 and 77,101.35 is: 115,652.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,863.60 : 137,795.40 = 77,101.35 : x
  2. Step 2: Convert to fraction form
    91,863.60/137,795.40 = 77,101.35/x
  3. Step 3: Cross multiply
    91,863.60x = 137,795.40 × 77,101.35
  4. Step 4: Simplify right side
    91,863.60x = 10,624,211,363.79
  5. Step 5: Solve for x
    x = 10,624,211,363.79/91,863.60
  6. Step 6: Final answer
    x = 115,652.03

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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.