Home / 134,138.10-185,099.72-77,553.12

Finding the Fourth Proportional to 134,138.10, 185,099.72 and 77,553.12

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Solution

The fourth proportional to 134,138.10, 185,099.72 and 77,553.12 is: 107,017.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,138.10 : 185,099.72 = 77,553.12 : x
  2. Step 2: Convert to fraction form
    134,138.10/185,099.72 = 77,553.12/x
  3. Step 3: Cross multiply
    134,138.10x = 185,099.72 × 77,553.12
  4. Step 4: Simplify right side
    134,138.10x = 14,355,060,797.13
  5. Step 5: Solve for x
    x = 14,355,060,797.13/134,138.10
  6. Step 6: Final answer
    x = 107,017.03

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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.