Home / 128,089.82-176,740.65-89,965.85

Finding the Fourth Proportional to 128,089.82, 176,740.65 and 89,965.85

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Solution

The fourth proportional to 128,089.82, 176,740.65 and 89,965.85 is: 124,136.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,089.82 : 176,740.65 = 89,965.85 : x
  2. Step 2: Convert to fraction form
    128,089.82/176,740.65 = 89,965.85/x
  3. Step 3: Cross multiply
    128,089.82x = 176,740.65 × 89,965.85
  4. Step 4: Simplify right side
    128,089.82x = 15,900,622,786.26
  5. Step 5: Solve for x
    x = 15,900,622,786.26/128,089.82
  6. Step 6: Final answer
    x = 124,136.51

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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.