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Finding the Fourth Proportional to 145,751.40, 218,627.12 and 112,519.96

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Solution

The fourth proportional to 145,751.40, 218,627.12 and 112,519.96 is: 168,779.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,751.40 : 218,627.12 = 112,519.96 : x
  2. Step 2: Convert to fraction form
    145,751.40/218,627.12 = 112,519.96/x
  3. Step 3: Cross multiply
    145,751.40x = 218,627.12 × 112,519.96
  4. Step 4: Simplify right side
    145,751.40x = 24,599,914,797.32
  5. Step 5: Solve for x
    x = 24,599,914,797.32/145,751.40
  6. Step 6: Final answer
    x = 168,779.96

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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.