Home / 99,406.11-137,184.21-56,972.83

Finding the Fourth Proportional to 99,406.11, 137,184.21 and 56,972.83

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Solution

The fourth proportional to 99,406.11, 137,184.21 and 56,972.83 is: 78,624.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,406.11 : 137,184.21 = 56,972.83 : x
  2. Step 2: Convert to fraction form
    99,406.11/137,184.21 = 56,972.83/x
  3. Step 3: Cross multiply
    99,406.11x = 137,184.21 × 56,972.83
  4. Step 4: Simplify right side
    99,406.11x = 7,815,772,390.15
  5. Step 5: Solve for x
    x = 7,815,772,390.15/99,406.11
  6. Step 6: Final answer
    x = 78,624.67

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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.