Home / 129,385.92-193,923.36-70,219.20

Finding the Fourth Proportional to 129,385.92, 193,923.36 and 70,219.20

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Solution

The fourth proportional to 129,385.92, 193,923.36 and 70,219.20 is: 105,244.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,385.92 : 193,923.36 = 70,219.20 : x
  2. Step 2: Convert to fraction form
    129,385.92/193,923.36 = 70,219.20/x
  3. Step 3: Cross multiply
    129,385.92x = 193,923.36 × 70,219.20
  4. Step 4: Simplify right side
    129,385.92x = 13,617,143,200.51
  5. Step 5: Solve for x
    x = 13,617,143,200.51/129,385.92
  6. Step 6: Final answer
    x = 105,244.40

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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.