Home / 176,392.72-243,633-128,569.36

Finding the Fourth Proportional to 176,392.72, 243,633 and 128,569.36

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Solution

The fourth proportional to 176,392.72, 243,633 and 128,569.36 is: 177,579.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,392.72 : 243,633 = 128,569.36 : x
  2. Step 2: Convert to fraction form
    176,392.72/243,633 = 128,569.36/x
  3. Step 3: Cross multiply
    176,392.72x = 243,633 × 128,569.36
  4. Step 4: Simplify right side
    176,392.72x = 31,323,738,884.88
  5. Step 5: Solve for x
    x = 31,323,738,884.88/176,392.72
  6. Step 6: Final answer
    x = 177,579.54

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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.