Home / 191,669.80-287,638.10-79,350.60

Finding the Fourth Proportional to 191,669.80, 287,638.10 and 79,350.60

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Solution

The fourth proportional to 191,669.80, 287,638.10 and 79,350.60 is: 119,081.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,669.80 : 287,638.10 = 79,350.60 : x
  2. Step 2: Convert to fraction form
    191,669.80/287,638.10 = 79,350.60/x
  3. Step 3: Cross multiply
    191,669.80x = 287,638.10 × 79,350.60
  4. Step 4: Simplify right side
    191,669.80x = 22,824,253,982.92
  5. Step 5: Solve for x
    x = 22,824,253,982.92/191,669.80
  6. Step 6: Final answer
    x = 119,081.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.