Home / 99,201.12-136,921.14-56,784.12

Finding the Fourth Proportional to 99,201.12, 136,921.14 and 56,784.12

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Solution

The fourth proportional to 99,201.12, 136,921.14 and 56,784.12 is: 78,375.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,201.12 : 136,921.14 = 56,784.12 : x
  2. Step 2: Convert to fraction form
    99,201.12/136,921.14 = 56,784.12/x
  3. Step 3: Cross multiply
    99,201.12x = 136,921.14 × 56,784.12
  4. Step 4: Simplify right side
    99,201.12x = 7,774,946,444.30
  5. Step 5: Solve for x
    x = 7,774,946,444.30/99,201.12
  6. Step 6: Final answer
    x = 78,375.59

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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.