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Finding the Fourth Proportional to 136,482.42, 188,386.29 and 86,214.90

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Solution

The fourth proportional to 136,482.42, 188,386.29 and 86,214.90 is: 119,002.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,482.42 : 188,386.29 = 86,214.90 : x
  2. Step 2: Convert to fraction form
    136,482.42/188,386.29 = 86,214.90/x
  3. Step 3: Cross multiply
    136,482.42x = 188,386.29 × 86,214.90
  4. Step 4: Simplify right side
    136,482.42x = 16,241,705,153.72
  5. Step 5: Solve for x
    x = 16,241,705,153.72/136,482.42
  6. Step 6: Final answer
    x = 119,002.18

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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.