Home / 115,758.36-159,656.40-77,505.75

Finding the Fourth Proportional to 115,758.36, 159,656.40 and 77,505.75

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Solution

The fourth proportional to 115,758.36, 159,656.40 and 77,505.75 is: 106,897.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,758.36 : 159,656.40 = 77,505.75 : x
  2. Step 2: Convert to fraction form
    115,758.36/159,656.40 = 77,505.75/x
  3. Step 3: Cross multiply
    115,758.36x = 159,656.40 × 77,505.75
  4. Step 4: Simplify right side
    115,758.36x = 12,374,289,024.30
  5. Step 5: Solve for x
    x = 12,374,289,024.30/115,758.36
  6. Step 6: Final answer
    x = 106,897.58

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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.