Home / 99,128.46-148,673.79-28,050.51

Finding the Fourth Proportional to 99,128.46, 148,673.79 and 28,050.51

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Solution

The fourth proportional to 99,128.46, 148,673.79 and 28,050.51 is: 42,070.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,128.46 : 148,673.79 = 28,050.51 : x
  2. Step 2: Convert to fraction form
    99,128.46/148,673.79 = 28,050.51/x
  3. Step 3: Cross multiply
    99,128.46x = 148,673.79 × 28,050.51
  4. Step 4: Simplify right side
    99,128.46x = 4,170,375,633.13
  5. Step 5: Solve for x
    x = 4,170,375,633.13/99,128.46
  6. Step 6: Final answer
    x = 42,070.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.