Home / 143,447.79-215,026.38-72,155.01

Finding the Fourth Proportional to 143,447.79, 215,026.38 and 72,155.01

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Solution

The fourth proportional to 143,447.79, 215,026.38 and 72,155.01 is: 108,159.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,447.79 : 215,026.38 = 72,155.01 : x
  2. Step 2: Convert to fraction form
    143,447.79/215,026.38 = 72,155.01/x
  3. Step 3: Cross multiply
    143,447.79x = 215,026.38 × 72,155.01
  4. Step 4: Simplify right side
    143,447.79x = 15,515,230,599.16
  5. Step 5: Solve for x
    x = 15,515,230,599.16/143,447.79
  6. Step 6: Final answer
    x = 108,159.43

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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.