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Finding the Fourth Proportional to 141,551.10, 195,340.19 and 77,888.90

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Solution

The fourth proportional to 141,551.10, 195,340.19 and 77,888.90 is: 107,486.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,551.10 : 195,340.19 = 77,888.90 : x
  2. Step 2: Convert to fraction form
    141,551.10/195,340.19 = 77,888.90/x
  3. Step 3: Cross multiply
    141,551.10x = 195,340.19 × 77,888.90
  4. Step 4: Simplify right side
    141,551.10x = 15,214,832,623.80
  5. Step 5: Solve for x
    x = 15,214,832,623.80/141,551.10
  6. Step 6: Final answer
    x = 107,486.50

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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.