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Finding the Fourth Proportional to 107,486.72, 160,505.76 and 87,804.16

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Solution

The fourth proportional to 107,486.72, 160,505.76 and 87,804.16 is: 131,114.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,486.72 : 160,505.76 = 87,804.16 : x
  2. Step 2: Convert to fraction form
    107,486.72/160,505.76 = 87,804.16/x
  3. Step 3: Cross multiply
    107,486.72x = 160,505.76 × 87,804.16
  4. Step 4: Simplify right side
    107,486.72x = 14,093,073,431.96
  5. Step 5: Solve for x
    x = 14,093,073,431.96/107,486.72
  6. Step 6: Final answer
    x = 131,114.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.