Home / 107,211.04-147,815.20-76,620.64

Finding the Fourth Proportional to 107,211.04, 147,815.20 and 76,620.64

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Solution

The fourth proportional to 107,211.04, 147,815.20 and 76,620.64 is: 105,639.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,211.04 : 147,815.20 = 76,620.64 : x
  2. Step 2: Convert to fraction form
    107,211.04/147,815.20 = 76,620.64/x
  3. Step 3: Cross multiply
    107,211.04x = 147,815.20 × 76,620.64
  4. Step 4: Simplify right side
    107,211.04x = 11,325,695,225.73
  5. Step 5: Solve for x
    x = 11,325,695,225.73/107,211.04
  6. Step 6: Final answer
    x = 105,639.26

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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.