Home / 99,123.03-136,789.97-56,681.55

Finding the Fourth Proportional to 99,123.03, 136,789.97 and 56,681.55

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Solution

The fourth proportional to 99,123.03, 136,789.97 and 56,681.55 is: 78,220.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,123.03 : 136,789.97 = 56,681.55 : x
  2. Step 2: Convert to fraction form
    99,123.03/136,789.97 = 56,681.55/x
  3. Step 3: Cross multiply
    99,123.03x = 136,789.97 × 56,681.55
  4. Step 4: Simplify right side
    99,123.03x = 7,753,467,240.65
  5. Step 5: Solve for x
    x = 7,753,467,240.65/99,123.03
  6. Step 6: Final answer
    x = 78,220.64

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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.