Home / 128,650.24-177,537.41-70,506.72

Finding the Fourth Proportional to 128,650.24, 177,537.41 and 70,506.72

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Solution

The fourth proportional to 128,650.24, 177,537.41 and 70,506.72 is: 97,299.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,650.24 : 177,537.41 = 70,506.72 : x
  2. Step 2: Convert to fraction form
    128,650.24/177,537.41 = 70,506.72/x
  3. Step 3: Cross multiply
    128,650.24x = 177,537.41 × 70,506.72
  4. Step 4: Simplify right side
    128,650.24x = 12,517,580,632.66
  5. Step 5: Solve for x
    x = 12,517,580,632.66/128,650.24
  6. Step 6: Final answer
    x = 97,299.32

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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.