Home / 143,741.54-215,373.96-87,411.26

Finding the Fourth Proportional to 143,741.54, 215,373.96 and 87,411.26

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Solution

The fourth proportional to 143,741.54, 215,373.96 and 87,411.26 is: 130,971.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,741.54 : 215,373.96 = 87,411.26 : x
  2. Step 2: Convert to fraction form
    143,741.54/215,373.96 = 87,411.26/x
  3. Step 3: Cross multiply
    143,741.54x = 215,373.96 × 87,411.26
  4. Step 4: Simplify right side
    143,741.54x = 18,826,108,239.30
  5. Step 5: Solve for x
    x = 18,826,108,239.30/143,741.54
  6. Step 6: Final answer
    x = 130,971.94

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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.