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Finding the Fourth Proportional to 112,232.40, 168,041.40 and 87,656.40

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Solution

The fourth proportional to 112,232.40, 168,041.40 and 87,656.40 is: 131,244.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,232.40 : 168,041.40 = 87,656.40 : x
  2. Step 2: Convert to fraction form
    112,232.40/168,041.40 = 87,656.40/x
  3. Step 3: Cross multiply
    112,232.40x = 168,041.40 × 87,656.40
  4. Step 4: Simplify right side
    112,232.40x = 14,729,904,174.96
  5. Step 5: Solve for x
    x = 14,729,904,174.96/112,232.40
  6. Step 6: Final answer
    x = 131,244.67

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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.