Home / 129,006.64-177,944.34-81,219.88

Finding the Fourth Proportional to 129,006.64, 177,944.34 and 81,219.88

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Solution

The fourth proportional to 129,006.64, 177,944.34 and 81,219.88 is: 112,030.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,006.64 : 177,944.34 = 81,219.88 : x
  2. Step 2: Convert to fraction form
    129,006.64/177,944.34 = 81,219.88/x
  3. Step 3: Cross multiply
    129,006.64x = 177,944.34 × 81,219.88
  4. Step 4: Simplify right side
    129,006.64x = 14,452,617,941.48
  5. Step 5: Solve for x
    x = 14,452,617,941.48/129,006.64
  6. Step 6: Final answer
    x = 112,030.03

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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.