Home / 99,628.03-137,490.20-56,606.91

Finding the Fourth Proportional to 99,628.03, 137,490.20 and 56,606.91

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Solution

The fourth proportional to 99,628.03, 137,490.20 and 56,606.91 is: 78,119.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,628.03 : 137,490.20 = 56,606.91 : x
  2. Step 2: Convert to fraction form
    99,628.03/137,490.20 = 56,606.91/x
  3. Step 3: Cross multiply
    99,628.03x = 137,490.20 × 56,606.91
  4. Step 4: Simplify right side
    99,628.03x = 7,782,895,377.28
  5. Step 5: Solve for x
    x = 7,782,895,377.28/99,628.03
  6. Step 6: Final answer
    x = 78,119.54

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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.