Home / 142,742.40-214,113.60-87,446.40

Finding the Fourth Proportional to 142,742.40, 214,113.60 and 87,446.40

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Solution

The fourth proportional to 142,742.40, 214,113.60 and 87,446.40 is: 131,169.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,742.40 : 214,113.60 = 87,446.40 : x
  2. Step 2: Convert to fraction form
    142,742.40/214,113.60 = 87,446.40/x
  3. Step 3: Cross multiply
    142,742.40x = 214,113.60 × 87,446.40
  4. Step 4: Simplify right side
    142,742.40x = 18,723,463,511.04
  5. Step 5: Solve for x
    x = 18,723,463,511.04/142,742.40
  6. Step 6: Final answer
    x = 131,169.60

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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.