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Finding the Fourth Proportional to 141,886.85, 195,693.05 and 90,904.30

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Solution

The fourth proportional to 141,886.85, 195,693.05 and 90,904.30 is: 125,376.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,886.85 : 195,693.05 = 90,904.30 : x
  2. Step 2: Convert to fraction form
    141,886.85/195,693.05 = 90,904.30/x
  3. Step 3: Cross multiply
    141,886.85x = 195,693.05 × 90,904.30
  4. Step 4: Simplify right side
    141,886.85x = 17,789,339,463.14
  5. Step 5: Solve for x
    x = 17,789,339,463.14/141,886.85
  6. Step 6: Final answer
    x = 125,376.95

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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.