Home / 134,740.38-202,120.87-78,586.12

Finding the Fourth Proportional to 134,740.38, 202,120.87 and 78,586.12

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Solution

The fourth proportional to 134,740.38, 202,120.87 and 78,586.12 is: 117,885.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,740.38 : 202,120.87 = 78,586.12 : x
  2. Step 2: Convert to fraction form
    134,740.38/202,120.87 = 78,586.12/x
  3. Step 3: Cross multiply
    134,740.38x = 202,120.87 × 78,586.12
  4. Step 4: Simplify right side
    134,740.38x = 15,883,894,944.32
  5. Step 5: Solve for x
    x = 15,883,894,944.32/134,740.38
  6. Step 6: Final answer
    x = 117,885.19

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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.