Home / 136,485.20-188,350.32-79,158.50

Finding the Fourth Proportional to 136,485.20, 188,350.32 and 79,158.50

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Solution

The fourth proportional to 136,485.20, 188,350.32 and 79,158.50 is: 109,239.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,485.20 : 188,350.32 = 79,158.50 : x
  2. Step 2: Convert to fraction form
    136,485.20/188,350.32 = 79,158.50/x
  3. Step 3: Cross multiply
    136,485.20x = 188,350.32 × 79,158.50
  4. Step 4: Simplify right side
    136,485.20x = 14,909,528,805.72
  5. Step 5: Solve for x
    x = 14,909,528,805.72/136,485.20
  6. Step 6: Final answer
    x = 109,239.16

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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.