Home / 143,445.79-215,023.38-72,153.01

Finding the Fourth Proportional to 143,445.79, 215,023.38 and 72,153.01

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Solution

The fourth proportional to 143,445.79, 215,023.38 and 72,153.01 is: 108,156.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,445.79 : 215,023.38 = 72,153.01 : x
  2. Step 2: Convert to fraction form
    143,445.79/215,023.38 = 72,153.01/x
  3. Step 3: Cross multiply
    143,445.79x = 215,023.38 × 72,153.01
  4. Step 4: Simplify right side
    143,445.79x = 15,514,584,087.37
  5. Step 5: Solve for x
    x = 15,514,584,087.37/143,445.79
  6. Step 6: Final answer
    x = 108,156.43

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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.