Home / 132,749.21-183,193.19-72,319.71

Finding the Fourth Proportional to 132,749.21, 183,193.19 and 72,319.71

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Solution

The fourth proportional to 132,749.21, 183,193.19 and 72,319.71 is: 99,800.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,749.21 : 183,193.19 = 72,319.71 : x
  2. Step 2: Convert to fraction form
    132,749.21/183,193.19 = 72,319.71/x
  3. Step 3: Cross multiply
    132,749.21x = 183,193.19 × 72,319.71
  4. Step 4: Simplify right side
    132,749.21x = 13,248,478,013.18
  5. Step 5: Solve for x
    x = 13,248,478,013.18/132,749.21
  6. Step 6: Final answer
    x = 99,800.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.