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Finding the Fourth Proportional to 105,155.40, 157,601.84 and 52,579.92

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Solution

The fourth proportional to 105,155.40, 157,601.84 and 52,579.92 is: 78,804.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,155.40 : 157,601.84 = 52,579.92 : x
  2. Step 2: Convert to fraction form
    105,155.40/157,601.84 = 52,579.92/x
  3. Step 3: Cross multiply
    105,155.40x = 157,601.84 × 52,579.92
  4. Step 4: Simplify right side
    105,155.40x = 8,286,692,139.05
  5. Step 5: Solve for x
    x = 8,286,692,139.05/105,155.40
  6. Step 6: Final answer
    x = 78,804.25

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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.