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Finding the Fourth Proportional to 99,112.91, 136,775.91 and 53,790.92

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Solution

The fourth proportional to 99,112.91, 136,775.91 and 53,790.92 is: 74,231.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,112.91 : 136,775.91 = 53,790.92 : x
  2. Step 2: Convert to fraction form
    99,112.91/136,775.91 = 53,790.92/x
  3. Step 3: Cross multiply
    99,112.91x = 136,775.91 × 53,790.92
  4. Step 4: Simplify right side
    99,112.91x = 7,357,302,451.40
  5. Step 5: Solve for x
    x = 7,357,302,451.40/99,112.91
  6. Step 6: Final answer
    x = 74,231.53

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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.