Home / 74,191.28-102,324.40-65,219.76

Finding the Fourth Proportional to 74,191.28, 102,324.40 and 65,219.76

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Solution

The fourth proportional to 74,191.28, 102,324.40 and 65,219.76 is: 89,950.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,191.28 : 102,324.40 = 65,219.76 : x
  2. Step 2: Convert to fraction form
    74,191.28/102,324.40 = 65,219.76/x
  3. Step 3: Cross multiply
    74,191.28x = 102,324.40 × 65,219.76
  4. Step 4: Simplify right side
    74,191.28x = 6,673,572,810.14
  5. Step 5: Solve for x
    x = 6,673,572,810.14/74,191.28
  6. Step 6: Final answer
    x = 89,950.91

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1.5x scale

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.