Home / 196,531.54-271,129.48-128,430.31

Finding the Fourth Proportional to 196,531.54, 271,129.48 and 128,430.31

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Solution

The fourth proportional to 196,531.54, 271,129.48 and 128,430.31 is: 177,178.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,531.54 : 271,129.48 = 128,430.31 : x
  2. Step 2: Convert to fraction form
    196,531.54/271,129.48 = 128,430.31/x
  3. Step 3: Cross multiply
    196,531.54x = 271,129.48 × 128,430.31
  4. Step 4: Simplify right side
    196,531.54x = 34,821,243,166.54
  5. Step 5: Solve for x
    x = 34,821,243,166.54/196,531.54
  6. Step 6: Final answer
    x = 177,178.91

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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.