Home / 145,709.18-201,082.10-81,182.76

Finding the Fourth Proportional to 145,709.18, 201,082.10 and 81,182.76

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Solution

The fourth proportional to 145,709.18, 201,082.10 and 81,182.76 is: 112,034.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,709.18 : 201,082.10 = 81,182.76 : x
  2. Step 2: Convert to fraction form
    145,709.18/201,082.10 = 81,182.76/x
  3. Step 3: Cross multiply
    145,709.18x = 201,082.10 × 81,182.76
  4. Step 4: Simplify right side
    145,709.18x = 16,324,398,704.62
  5. Step 5: Solve for x
    x = 16,324,398,704.62/145,709.18
  6. Step 6: Final answer
    x = 112,034.11

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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.