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Finding the Fourth Proportional to 136,437.60, 188,187.60 and 79,860.24

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Solution

The fourth proportional to 136,437.60, 188,187.60 and 79,860.24 is: 110,150.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,437.60 : 188,187.60 = 79,860.24 : x
  2. Step 2: Convert to fraction form
    136,437.60/188,187.60 = 79,860.24/x
  3. Step 3: Cross multiply
    136,437.60x = 188,187.60 × 79,860.24
  4. Step 4: Simplify right side
    136,437.60x = 15,028,706,901.02
  5. Step 5: Solve for x
    x = 15,028,706,901.02/136,437.60
  6. Step 6: Final answer
    x = 110,150.77

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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.