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Finding the Fourth Proportional to 141,643.62, 195,482.03 and 105,771.42

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Solution

The fourth proportional to 141,643.62, 195,482.03 and 105,771.42 is: 145,974.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,643.62 : 195,482.03 = 105,771.42 : x
  2. Step 2: Convert to fraction form
    141,643.62/195,482.03 = 105,771.42/x
  3. Step 3: Cross multiply
    141,643.62x = 195,482.03 × 105,771.42
  4. Step 4: Simplify right side
    141,643.62x = 20,676,411,368.73
  5. Step 5: Solve for x
    x = 20,676,411,368.73/141,643.62
  6. Step 6: Final answer
    x = 145,974.89

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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.