Home / 127,638.92-191,458.40-57,436.20

Finding the Fourth Proportional to 127,638.92, 191,458.40 and 57,436.20

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Solution

The fourth proportional to 127,638.92, 191,458.40 and 57,436.20 is: 86,154.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,638.92 : 191,458.40 = 57,436.20 : x
  2. Step 2: Convert to fraction form
    127,638.92/191,458.40 = 57,436.20/x
  3. Step 3: Cross multiply
    127,638.92x = 191,458.40 × 57,436.20
  4. Step 4: Simplify right side
    127,638.92x = 10,996,642,954.08
  5. Step 5: Solve for x
    x = 10,996,642,954.08/127,638.92
  6. Step 6: Final answer
    x = 86,154.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.