Home / 128,225.10-176,975.07-84,540.94

Finding the Fourth Proportional to 128,225.10, 176,975.07 and 84,540.94

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Solution

The fourth proportional to 128,225.10, 176,975.07 and 84,540.94 is: 116,682.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,225.10 : 176,975.07 = 84,540.94 : x
  2. Step 2: Convert to fraction form
    128,225.10/176,975.07 = 84,540.94/x
  3. Step 3: Cross multiply
    128,225.10x = 176,975.07 × 84,540.94
  4. Step 4: Simplify right side
    128,225.10x = 14,961,638,774.37
  5. Step 5: Solve for x
    x = 14,961,638,774.37/128,225.10
  6. Step 6: Final answer
    x = 116,682.61

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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.