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Finding the Fourth Proportional to 128,149.37, 176,845.41 and 70,792.62

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Solution

The fourth proportional to 128,149.37, 176,845.41 and 70,792.62 is: 97,693.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,149.37 : 176,845.41 = 70,792.62 : x
  2. Step 2: Convert to fraction form
    128,149.37/176,845.41 = 70,792.62/x
  3. Step 3: Cross multiply
    128,149.37x = 176,845.41 × 70,792.62
  4. Step 4: Simplify right side
    128,149.37x = 12,519,349,908.87
  5. Step 5: Solve for x
    x = 12,519,349,908.87/128,149.37
  6. Step 6: Final answer
    x = 97,693.42

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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.