Home / 99,069.10-136,715.34-56,628.54

Finding the Fourth Proportional to 99,069.10, 136,715.34 and 56,628.54

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Solution

The fourth proportional to 99,069.10, 136,715.34 and 56,628.54 is: 78,147.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,069.10 : 136,715.34 = 56,628.54 : x
  2. Step 2: Convert to fraction form
    99,069.10/136,715.34 = 56,628.54/x
  3. Step 3: Cross multiply
    99,069.10x = 136,715.34 × 56,628.54
  4. Step 4: Simplify right side
    99,069.10x = 7,741,989,816.66
  5. Step 5: Solve for x
    x = 7,741,989,816.66/99,069.10
  6. Step 6: Final answer
    x = 78,147.38

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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.