Home / 119,119.32-178,641.09-39,138.86

Finding the Fourth Proportional to 119,119.32, 178,641.09 and 39,138.86

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Solution

The fourth proportional to 119,119.32, 178,641.09 and 39,138.86 is: 58,695.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,119.32 : 178,641.09 = 39,138.86 : x
  2. Step 2: Convert to fraction form
    119,119.32/178,641.09 = 39,138.86/x
  3. Step 3: Cross multiply
    119,119.32x = 178,641.09 × 39,138.86
  4. Step 4: Simplify right side
    119,119.32x = 6,991,808,611.76
  5. Step 5: Solve for x
    x = 6,991,808,611.76/119,119.32
  6. Step 6: Final answer
    x = 58,695.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.