Home / 128,776.51-193,125.21-89,050.72

Finding the Fourth Proportional to 128,776.51, 193,125.21 and 89,050.72

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Solution

The fourth proportional to 128,776.51, 193,125.21 and 89,050.72 is: 133,548.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,776.51 : 193,125.21 = 89,050.72 : x
  2. Step 2: Convert to fraction form
    128,776.51/193,125.21 = 89,050.72/x
  3. Step 3: Cross multiply
    128,776.51x = 193,125.21 × 89,050.72
  4. Step 4: Simplify right side
    128,776.51x = 17,197,939,000.65
  5. Step 5: Solve for x
    x = 17,197,939,000.65/128,776.51
  6. Step 6: Final answer
    x = 133,548.73

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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.