Home / 128,148.83-176,844.67-70,792.09

Finding the Fourth Proportional to 128,148.83, 176,844.67 and 70,792.09

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Solution

The fourth proportional to 128,148.83, 176,844.67 and 70,792.09 is: 97,692.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,148.83 : 176,844.67 = 70,792.09 : x
  2. Step 2: Convert to fraction form
    128,148.83/176,844.67 = 70,792.09/x
  3. Step 3: Cross multiply
    128,148.83x = 176,844.67 × 70,792.09
  4. Step 4: Simplify right side
    128,148.83x = 12,519,203,794.66
  5. Step 5: Solve for x
    x = 12,519,203,794.66/128,148.83
  6. Step 6: Final answer
    x = 97,692.69

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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.