Home / 113,717.04-156,993.84-78,854.64

Finding the Fourth Proportional to 113,717.04, 156,993.84 and 78,854.64

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Solution

The fourth proportional to 113,717.04, 156,993.84 and 78,854.64 is: 108,864.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,717.04 : 156,993.84 = 78,854.64 : x
  2. Step 2: Convert to fraction form
    113,717.04/156,993.84 = 78,854.64/x
  3. Step 3: Cross multiply
    113,717.04x = 156,993.84 × 78,854.64
  4. Step 4: Simplify right side
    113,717.04x = 12,379,692,735.42
  5. Step 5: Solve for x
    x = 12,379,692,735.42/113,717.04
  6. Step 6: Final answer
    x = 108,864.01

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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.