Home / 121,475.44-167,409.10-87,424.81

Finding the Fourth Proportional to 121,475.44, 167,409.10 and 87,424.81

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Solution

The fourth proportional to 121,475.44, 167,409.10 and 87,424.81 is: 120,482.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,475.44 : 167,409.10 = 87,424.81 : x
  2. Step 2: Convert to fraction form
    121,475.44/167,409.10 = 87,424.81/x
  3. Step 3: Cross multiply
    121,475.44x = 167,409.10 × 87,424.81
  4. Step 4: Simplify right side
    121,475.44x = 14,635,709,589.53
  5. Step 5: Solve for x
    x = 14,635,709,589.53/121,475.44
  6. Step 6: Final answer
    x = 120,482.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.