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Finding the Fourth Proportional to 128,149.33, 176,845.36 and 70,792.59

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Solution

The fourth proportional to 128,149.33, 176,845.36 and 70,792.59 is: 97,693.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,149.33 : 176,845.36 = 70,792.59 : x
  2. Step 2: Convert to fraction form
    128,149.33/176,845.36 = 70,792.59/x
  3. Step 3: Cross multiply
    128,149.33x = 176,845.36 × 70,792.59
  4. Step 4: Simplify right side
    128,149.33x = 12,519,341,063.88
  5. Step 5: Solve for x
    x = 12,519,341,063.88/128,149.33
  6. Step 6: Final answer
    x = 97,693.38

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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.