Home / 128,671.12-193,020.92-44,421.72

Finding the Fourth Proportional to 128,671.12, 193,020.92 and 44,421.72

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Solution

The fourth proportional to 128,671.12, 193,020.92 and 44,421.72 is: 66,637.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,671.12 : 193,020.92 = 44,421.72 : x
  2. Step 2: Convert to fraction form
    128,671.12/193,020.92 = 44,421.72/x
  3. Step 3: Cross multiply
    128,671.12x = 193,020.92 × 44,421.72
  4. Step 4: Simplify right side
    128,671.12x = 8,574,321,262.38
  5. Step 5: Solve for x
    x = 8,574,321,262.38/128,671.12
  6. Step 6: Final answer
    x = 66,637.50

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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.