Home / 99,253.56-136,976.04-56,811.12

Finding the Fourth Proportional to 99,253.56, 136,976.04 and 56,811.12

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Solution

The fourth proportional to 99,253.56, 136,976.04 and 56,811.12 is: 78,402.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,253.56 : 136,976.04 = 56,811.12 : x
  2. Step 2: Convert to fraction form
    99,253.56/136,976.04 = 56,811.12/x
  3. Step 3: Cross multiply
    99,253.56x = 136,976.04 × 56,811.12
  4. Step 4: Simplify right side
    99,253.56x = 7,781,762,245.56
  5. Step 5: Solve for x
    x = 7,781,762,245.56/99,253.56
  6. Step 6: Final answer
    x = 78,402.85

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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.