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Finding the Fourth Proportional to 128,694.64, 177,598.29 and 70,551.27

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Solution

The fourth proportional to 128,694.64, 177,598.29 and 70,551.27 is: 97,360.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,694.64 : 177,598.29 = 70,551.27 : x
  2. Step 2: Convert to fraction form
    128,694.64/177,598.29 = 70,551.27/x
  3. Step 3: Cross multiply
    128,694.64x = 177,598.29 × 70,551.27
  4. Step 4: Simplify right side
    128,694.64x = 12,529,783,668.58
  5. Step 5: Solve for x
    x = 12,529,783,668.58/128,694.64
  6. Step 6: Final answer
    x = 97,360.58

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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.