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Finding the Fourth Proportional to 136,482.58, 188,346.71 and 79,155.88

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Solution

The fourth proportional to 136,482.58, 188,346.71 and 79,155.88 is: 109,235.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,482.58 : 188,346.71 = 79,155.88 : x
  2. Step 2: Convert to fraction form
    136,482.58/188,346.71 = 79,155.88/x
  3. Step 3: Cross multiply
    136,482.58x = 188,346.71 × 79,155.88
  4. Step 4: Simplify right side
    136,482.58x = 14,908,748,237.64
  5. Step 5: Solve for x
    x = 14,908,748,237.64/136,482.58
  6. Step 6: Final answer
    x = 109,235.54

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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.