Home / 143,322.40-214,985.40-38,140.72

Finding the Fourth Proportional to 143,322.40, 214,985.40 and 38,140.72

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Solution

The fourth proportional to 143,322.40, 214,985.40 and 38,140.72 is: 57,211.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,322.40 : 214,985.40 = 38,140.72 : x
  2. Step 2: Convert to fraction form
    143,322.40/214,985.40 = 38,140.72/x
  3. Step 3: Cross multiply
    143,322.40x = 214,985.40 × 38,140.72
  4. Step 4: Simplify right side
    143,322.40x = 8,199,697,945.49
  5. Step 5: Solve for x
    x = 8,199,697,945.49/143,322.40
  6. Step 6: Final answer
    x = 57,211.56

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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.