Home / 138,093.36-190,554.84-77,654.40

Finding the Fourth Proportional to 138,093.36, 190,554.84 and 77,654.40

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Solution

The fourth proportional to 138,093.36, 190,554.84 and 77,654.40 is: 107,155.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,093.36 : 190,554.84 = 77,654.40 : x
  2. Step 2: Convert to fraction form
    138,093.36/190,554.84 = 77,654.40/x
  3. Step 3: Cross multiply
    138,093.36x = 190,554.84 × 77,654.40
  4. Step 4: Simplify right side
    138,093.36x = 14,797,421,767.30
  5. Step 5: Solve for x
    x = 14,797,421,767.30/138,093.36
  6. Step 6: Final answer
    x = 107,155.20

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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.