Home / 99,069.35-136,715.68-56,628.79

Finding the Fourth Proportional to 99,069.35, 136,715.68 and 56,628.79

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Solution

The fourth proportional to 99,069.35, 136,715.68 and 56,628.79 is: 78,147.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,069.35 : 136,715.68 = 56,628.79 : x
  2. Step 2: Convert to fraction form
    99,069.35/136,715.68 = 56,628.79/x
  3. Step 3: Cross multiply
    99,069.35x = 136,715.68 × 56,628.79
  4. Step 4: Simplify right side
    99,069.35x = 7,742,043,190.64
  5. Step 5: Solve for x
    x = 7,742,043,190.64/99,069.35
  6. Step 6: Final answer
    x = 78,147.72

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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.